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Vote with your feet by moving (http://WalkingToFreedom.com) to the libertarian safe refuge of the “American Redoubt” in Idaho - Montana - Wyoming - Eastern Oregon - Eastern Washington - Northern Utah or the Texas Redoubt or the Tennessee Cumberland Redoubt (http://www.thesurvivalistblog.net/redoubt-of-the-east) for more Bill of Rights freedom, especially Second Amendment gun rights — see

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http://www.RevRealty.us,

https://www.SurvivalRealty.com

RadioFreeRedoubt.com podcast,

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Sadly, the beautiful state of California is now a lost cause politically. But still keep fighting to restore her greatness.

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We are “Prepared Individuals Living in Uncertain Times” is the motto of James Wesley Rawles SurvivalBlog.com.

We Vote-with-our-Feet and have prepared “For when times get tough, or even if they don't” - the motto of Jack Spirko's SurvivalPodcast (www.thesurvivalpodcast.com)

One could say that the American Redoubt was “founded” when Montana became a State of these United States of America on November 8, 1889, just 1 year before Idaho and Wyoming.

For those who are more attached to the East Coast and can't easily migrate to the American Redoubt in the Intermountain-West, we recommend the blog of the inspirational M.D. Creekmore who posted Joel M. Skousen, Author, Strategic Relocation North American Guide to Safe Places, on the Tennessee Cumberland Plateau solution to the “The East Coast Retreat Dilemma”: http://www.thesurvivalistblog.net/redoubt-of-the-east http://www.thesurvivalistblog.net/news-eastern-redoubt-tennessee-cumberland-plateau/

“As a relocation specialist and designer, I found safe retreat locations and helped clients develop high security homes in every state of the union and you can too. The concept that anyone caught East of the Mississippi River is doomed is only partially valid and highly exaggerated. You can achieve a significantly higher level of safety going beyond the Appalachians to the high plateau regions of Tennessee and Kentucky. This massive and relatively unpopulated area is called the Cumberland Plateau—most of which falls within the state of Tennessee.” Joel M. Skousen (https://joelskousen.com/strategic.html) is a relocation specialist and author of “Strategic Relocation North American Guide to Safe Places.” https://www.thesurvivalistblog.net/redoubt-east-aka-cumberland-plateau-ot-tennessee/

catfish
Snippet from Wikipedia: Catfish

Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to detritivores (species that eat dead material on the bottom), and even to a tiny parasitic species commonly called the candiru, Vandellia cirrhosa. Neither the armour-plated types nor the naked types have scales. Despite their name, not all catfish have prominent barbels. Members of the Siluriformes order are defined by features of the skull and swimbladder. Catfish are of considerable commercial importance; many of the larger species are farmed or fished for food. Many of the smaller species, particularly the genus Corydoras, are important in the aquarium hobby. Many catfish are nocturnal, but others (many Auchenipteridae) are crepuscular or diurnal (most Loricariidae or Callichthyidae, for example).

</ref>

– Extant Families -<br /> Akysidae<br /> Amblycipitidae<br /> Amphiliidae<br /> Anchariidae<br /> Ariidae<br /> Aspredinidae<br /> Astroblepidae<br /> Auchenipteridae<br /> Austroglanididae<br /> Bagridae<br /> Callichthyidae<br /> Cetopsidae<br /> Chacidae<br /> Clariidae<br /> Claroteidae<br /> Cranoglanididae<br /><!– Zoosystema 22 (4): 847-852 –> Diplomystidae<br /> Doradidae<br /> Erethistidae<br /> Heptapteridae<br /> Heteropneustidae<br /> Ictaluridae<br /> Lacantuniidae<br /> Loricariidae<br /> Malapteruridae<br /> Mochokidae<br /> Nematogenyiidae<br /> Olyridae<br /> Pangasiidae<br /> Pimelodidae<br /> Plotosidae<br /> Pseudopimelodidae<br /> Schilbeidae<br /> Scoloplacidae<br /> Siluridae<br /> Sisoridae<br /> Trichomycteridae<br /><br /> incertae sedis<br /> &nbsp;&nbsp;Conorhynchos<br /><br /> – Extinct Family -<br /> Andinichthyidae&nbsp; }} Catfishes (order Siluriformes) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the heaviest and longest, the Mekong giant catfish from Southeast Asia and the second longest, the wels catfish of Eurasia, to detritivores (species that eat dead material on the bottom), and even to a tiny parasitic species commonly called the candiru, Vandellia cirrhosa. There are armour-plated types and also naked types, neither having scales. Despite their name, not all catfish have prominent barbels; members of the Siluriformes order are defined by features of the skull and swimbladder. Catfish are of considerable commercial importance; many of the larger species are farmed or fished for food. Many of the smaller species, particularly the genus Corydoras, are important in the aquarium hobby. Catfish are nocturnal.<ref name=“aworld”>Catfish Varieties. animal-world.com</ref><ref name=“samer”>Wong, Kate (6 June 2001) "How Nocturnal Catfish Stalk Their Prey". Scientific American.</ref>

Distribution and habitat

Extant catfish species live inland or in coastal waters of every continent except Antarctica. Catfish have inhabited all continents at one time or another.<ref name=“Nelson”/> Catfish are most diverse in tropical South America, North America, Africa, and Asia.<ref name=tol/> More than half of all catfish species live in the Americas. They are the only ostariophysans that have entered freshwater habitats in Madagascar, Australia, and New Guinea.<ref name=“Bruton”>

</ref>

They are found in freshwater environments, though most inhabit shallow, running water.<ref name=“Bruton”/> Representatives of at least eight families are hypogean (live underground) with three families that are also troglobitic (inhabiting caves).<ref>

</ref><ref>

</ref> One such species is Phreatobius cisternarum, known to live underground in phreatic habitats.<ref name=pcisternarum>

</ref> Numerous species from the families Ariidae and Plotosidae, and a few species from among the Aspredinidae and Bagridae, are found in salt water.<ref>Monks N. (editor): Brackish Water Fishes, TFH 2006, ISBN 0-7938-0564-3</ref><ref>Schäfer F: Brackish Water Fishes, Aqualog 2005, ISBN 3-936027-82-X</ref>

In the United States, catfish species may be known by a variety of slang names, such as “mud cat”, “polliwogs”, or “chuckleheads”.<ref>Texas Dept. Wildlife</ref> These nicknames are not standardized, so one area may call a bullhead catfish by the nickname “chucklehead”, while in another state or region, that nickname refers to the blue catfish.

Physical characteristics

External anatomy of catfish

.]]

Most catfish are bottom feeders. In general, they are negatively buoyant, which means that they will usually sink rather than float due to a reduced gas bladder and a heavy, bony head.<ref name=“Bruton”/> Catfish have a variety of body shapes, though most have a cylindrical body with a flattened ventrum to allow for benthic feeding.<ref name=“Bruton”/>

A flattened head allows for digging through the substrate as well as perhaps serving as a hydrofoil. Most have a mouth that can expand to a large size and contains no incisiform teeth; catfish generally feed through suction or gulping rather than biting and cutting prey.<ref name=“Bruton”/> However, some families, notably Loricariidae and Astroblepidae, have a suckermouth that allows them to fasten themselves to objects in fast-moving water. Catfish also have a maxilla reduced to a support for barbels; this means that they are unable to protrude their mouths as other fish such as carp.<ref name=“Bruton”/>

Catfish may have up to four pairs of barbels: nasal, maxillary (on each side of mouth), and two pairs of chin barbels, even though pairs of barbels may be absent depending on the species. Catfish also have chemoreceptors across their entire bodies, which means they “taste” anything they touch and “smell” any chemicals in the water. “In catfish, gustation plays a primary role in the orientation and location of food”.<ref>Atema, Jelle (1980) "Chemical senses, chemical signals, and feeding behavior in fishes" pp. 57–101. In: Bardach, JE Fish behavior and its use in the capture and culture of fishes', The WorldFish Center, ISBN 978-971-02-0003-0.</ref> Because their barbels and chemoreception are more important in detecting food, the eyes on catfish are generally small. Like other ostariophysans, they are characterized by the presence of a Weberian apparatus.<ref name=“Nelson”/> Their well-developed Weberian apparatus and reduced gas bladder allow for improved hearing as well as sound production.<ref name=“Bruton”/>

Catfish have no scales; their bodies are often naked. In some species, the mucus-covered skin is used in cutaneous respiration, where the fish breathes through its skin.<ref name=“Bruton”/> In some catfish, the skin is covered in bony plates called scutes; some form of body armor appears in various ways within the order. In loricarioids and in the Asian genus Sisor, the armor is primarily made up of one or more rows of free dermal plates. Similar plates are found in large specimens of Lithodoras. These plates may be supported by vertebral processes, as in scoloplacids and in Sisor, but the processes never fuse to the plates or form any external armor. By contrast, in the subfamily Doumeinae (family Amphiliidae) and in hoplomyzontines (Aspredinidae), the armor is formed solely by expanded vertebral processes that form plates. Finally, the lateral armor of doradids, Sisor, and hoplomyzontines consists of hypertrophied lateral line ossicles with dorsal and ventral lamina.<ref>

</ref>

has four pairs of barbels.]] All catfish, except members of Malapteruridae (electric catfish), possess a strong, hollow, bonified leading spine-like ray on their dorsal and pectoral fins. As a defense, these spines may be locked into place so that they stick outwards, which can inflict severe wounds.<ref name=tol/> In several species catfish can use these fin rays to deliver a stinging protein if the fish is irritated.<ref name=fin>

</ref> This venom is produced by glandular cells in the epidermal tissue covering the spines.<ref name=“Nelson”/> In members of the family Plotosidae, and of the genus Heteropneustes, this protein is so strong it may hospitalize humans, those unfortunate enough to receive a sting; in Plotosus lineatus, the stings may result in death.<ref name=“Nelson”/>

Juvenile catfish, like most fish, have relatively large heads, eyes and posterior median fins in comparison to larger, more mature individuals. These juveniles can be readily placed in their families, particularly those with highly derived fin or body shapes; in some cases identification of the genus is possible. As far as known for most catfish, features that are often characteristic of species such as mouth and fin positions, fin shapes, and barbel lengths show little difference between juveniles and adults. For many species, pigmentation pattern is also similar in juveniles and adults. Thus, juvenile catfishes generally resemble and develop smoothly into their adult form without distinct juvenile specializations. Exceptions to this are the ariid catfishes, where the young retain yolk sacs late into juvenile stages, and many pimelodids, which may have elongated barbels and fin filaments or coloration patterns.<ref>

</ref>

Sexual dimorphism is reported in about half of all families of catfish.<ref>

</ref> The modification of the anal fin into an intromittent organ (in internal fertilizers) as well as accessory structures of the reproductive apparatus (in both internal and external fertilizers) have been described in species belonging to 11 different families.<ref name=“Mazzoldi”>

</ref>

Size

, may be fatal.]]

Catfish have one of the greatest ranges in size within a single order of bony fish.<ref name=“Bruton”/> Many catfish have a maximum length of under 12&nbsp;cm.<ref name=“Nelson”/> Some of the smallest species of Aspredinidae and Trichomycteridae reach sexual maturity at only

.<ref name=tol/>

The wels catfish, Silurus glanis, is the only native catfish species of Europe, besides the much smaller related Aristotle's catfish found in Greece. Mythology and literature record wels catfish of astounding proportions, yet to be proven scientifically. The average size of the species is about 1.2–1.6&nbsp;m (3.9–5.2&nbsp;ft), and fish more than

are very rare. The largest specimens on record measure more than

in length and sometimes exceeded

. In July 2009, a catfish weighing

was caught in the River Ebro, Spain, by an 11-year old British schoolgirl.<ref>

</ref>

In North America the largest Ictalurus furcatus (Blue catfish) caught in the Missouri River on 20 July 2010, weighed

. The largest flathead catfish, Pylodictis olivaris, ever caught was in Independence, Kansas, weighing 123&nbsp;lb 9&nbsp;oz (56.0&nbsp;kg).

These records pale in comparison to a giant Mekong catfish caught in northern Thailand on 1 May 2005 and reported to the press almost 2 months later that weighed

. This is the largest giant Mekong catfish caught since Thai officials started keeping records in 1981.<ref name=Mekong>

</ref> This species is not well studied since it lives in developing countries and it is quite possible it can grow even larger.

Also in Asia, Jeremy Wade caught a

Goonch following three fatal attacks on humans in the Kali River on the India-Nepal border. Wade was of the opinion that the offending fish must even have been significantly larger to have taken an 18 year old boy as well as a water buffalo.

Internal anatomy

In many catfish, the humeral process is a bony process extending backward from the pectoral girdle immediately above the base of the pectoral fin. It lies beneath the skin where its outline may be determined by dissecting the skin or probing with a needle.<ref>

</ref>

The retina of catfish are composed of single cones and large rods. Many catfish have a tapetum lucidum which may help enhance photon capture and increase low-light sensitivity. Double cones, though present in most teleosts, are absent from catfish.<ref name=“Douglas”>

</ref>

The anatomical organization of the testis in catfish is variable among the families of catfish, but the majority of them present fringed testis: Ictaluridae, Claridae, Auchenipteridae, Doradidae, Pimelodidae, and Pseudopimelodidae.<ref name=“Barros”/> In the testes of some species of Siluriformes, organs and structures such as a spermatogenic cranial region and a secretory caudal region are observed, in addition to the presence of seminal vesicles in the caudal region.<ref name=“Brito”/> The total number of fringes and their length are different in the caudal and cranial portions between species.<ref name=“Barros”>

</ref> Fringes of the caudal region may present tubules, in which the lumen is filled by secretion and spermatozoa.<ref name=“Barros”/> Spermatocysts are formed from cytoplasmic extensions of Sertoli cells; the release of spermatozoa is allowed by breaking of the cyst walls.<ref name=“Barros”/>

The occurrence of seminal vesicles, in spite of their interspecific variability in size, gross morphology and function, has not been related to the mode of fertilization. They are typically paired, multi-chambered, and connected with the sperm duct, and have been reported to play a glandular and a storage function. Seminal vesicle secretion may include steroids and steroid glucuronides, with hormonal and pheromonal functions, but it appears to be primarily constituted of mucoproteins, acid mucopolysaccharides, and phospholipids.<ref name=“Mazzoldi”/>

Fish ovaries may be of two types: gymnovarian or cystovarian. In the first type, the oocytes are released directly into the coelomic cavity and then eliminated. In the second type, the oocytes are conveyed to the exterior through the oviduct.<ref name=“Brito”/> Many catfish are cystovarian in type, including Pseudoplatystoma corruscans, P. fasciatum, Lophiosilurus alexandri, and Loricaria lentiginosa.<ref name=“Barros”/><ref name=“Brito”>

</ref>

Communication

Sound production and interpretation

Catfish can produce different types of sounds and also have well-developed auditory reception used to discriminate between sounds with different pitches and velocities. They are also able to determine the distance of the sound's origin and from what direction it originated.<ref name=“General Sounds Kasumayan”>

</ref> This is a very important fish communication mechanism, especially during agonistic and distress behaviors. Catfish are able to produce a variety of sounds for communication that can be classified into two groups: drumming sounds and stridulation sounds.<ref>Lechner, Walter (2014). Young Squeaker Catfish can already talk and listen to their conspecifics. Witzany, G (ed). Biocommunication of Animals. Dortrecht, Springer, 321-335.</ref> The variability in catfish sound signals differs due to a few factors: the mechanism by which the sound is produced, the function of the resulting sound, and physiological differences such as size, sex, and age.<ref name=“Stridulatory Sound Production Vance”>

</ref> To create a drumming sound, catfish use an indirect vibration mechanism using a swimbladder. In these fishes, sonic muscles insert on the ramus Mulleri, also known as the elastic spring. The sonic muscles pull the elastic spring forward and extend the swimbladder. When the muscles relax, the tension in the spring quickly returns the swimbladder to its original position, which produces the sound.<ref name=“Sound Generating Mechs”>

</ref>

Catfish also have a sound-generating mechanism in their pectoral fins. Many species in the catfish family possess an enhanced first pectoral fin ray, called the spine, which can be moved by large abductor and adductor muscles. The base of the catfishes’ spines has a sequence of ridges, and the spine normally slides within a groove on the fish’s pelvic girdle during routine movement; but, pressing the ridges on the spine against the pelvic girdle groove creates a series of short pulses.<ref name=“General Sounds Kasumayan” /><ref name=“Sound Generating Mechs” /> The movement is analogous to a finger moving down the teeth of a comb, and consequently a series of sharp taps is produced.<ref name=“Stridulatory Sound Production Vance” />

Sound-generating mechanisms are often different between genders. In some catfishes, pectoral fins are longer in males than in females of similar length, and differences in the characteristic of the sounds produced were also observed.<ref name=“Sound Generating Mechs” /> Comparison between families of the same order of catfish demonstrated family and species-specific patterns of vocalization, according to a study by Maria Clara Amorim. During courtship behavior in three species of Corydoras catfishes, all males actively produced stridulation sounds before egg fertilization, and the species’ songs were different in pulse number and sound duration.<ref name=“Amorim article”>

</ref>

Sound production in catfish may also be correlated with fighting and alarm calls. According to a study by Kaatz, sounds for disturbance (i.e., alarm) and agonistic behavior were not significantly different, which suggests distress sounds can be used to sample variation in agonistic sound production.<ref name=“Amorim article” /> However, in a comparison of a few different species of tropical catfish, some fish put under distress conditions produced a higher intensity of stridulatory sounds than drumming sounds.<ref name=“Agonistic behavior”/> Differences in the proportion of drumming versus stridulation sounds depend on morphological constraints, such as different sizes of drumming muscles and pectoral spines. Due to these constraints, some fish may not even be able to produce a specific sound. In several different species of catfish, aggressive sound production occurs during cover site defense or during threats from other fish. More specifically, in long-whiskered catfishes, drumming sounds are used as a threatening signal and stridulations are used as a defense signal. Kaatz investigated 83 species from 14 families of catfish, and determined that catfishes produce more stridulatory sounds in disturbance situations and more swimbladder sounds in intraspecific conflicts.<ref name=“Agonistic behavior”>

</ref>

Catfish as food

Catfish have widely been caught and farmed for food for hundreds of years in Africa, Asia, Europe, and North America. Judgments as to the quality and flavor vary, with some food critics considering catfish as being excellent food, while others dismiss them as watery and lacking in flavor.<ref name=Baker>Jenny Baker (1988), Simply Fish p 36-37. Faver & Faber, London.</ref> In Central Europe, catfish were often viewed as a delicacy to be enjoyed on feast days and holidays. Migrants from Europe and Africa to the United States brought along this tradition, and in the Southern United States, catfish is an extremely popular food. The most commonly eaten species in the United States are the channel catfish and the blue catfish, both of which are common in the wild and increasingly widely farmed. Farm-raised catfish became such a staple of the diet of the United States that on 25 June 1987, President Ronald Reagan established National Catfish Day to recognize “the value of farm-raised catfish.”

Catfish is eaten in a variety of ways. In Europe it is often cooked in similar ways to carp, but in the United States it is popularly crumbed with cornmeal and fried.<ref name=Baker/>

In Indonesia, catfish is usually served grilled in street stalls called warung and eaten with vegetables and soy sauce; the dish is called pecel lele. Catfish can also be eaten with chili sambal as lele penyet (minced catfish). (Lele is the Indonesian word for catfish.)

In Malaysia catfish, called “ikan keli”, is fried with spices or grilled and eaten with tamarind and Thai chillies gravy and also is often eaten with steamed rice.

In Bangladesh and the Indian states of Odisha, West Bengal and Assam catfish (locally known as Magur) is eaten as a favored delicacy during the monsoons. Catfish, locally known as thedu or etta in Malayalam, is popular in the Indian state Kerala.

In Hungary catfish is often cooked in paprika sauce (Harcsapaprikás) typical of Hungarian cuisine. It is traditionally served with pasta smothered with curd cheese (túrós csusza).

Catfish is high in Vitamin D.<ref name = FactD>

</ref> Farm-raised catfish contains low levels of omega-3 fatty acids and a much higher proportion of omega-6 fatty acids.<ref>Fatty Fish Not Equal in Good Fats. Reuters. Source: Journal of the American Dietetic Association, July 2008</ref>

Vietnamese catfish cannot be legally marketed as catfish in the United States, and is subsequently referred to as ''swai'' or ''basa''<ref name = FactSwai>

</ref> Only fish of the family Ictaluridae may be marketed as catfish in the United States.<ref name = 21USC343>

</ref>

As catfish lack scales, they are judged not to be kosher and may not be eaten by observant Jews, some Christians who follow the Torah's food restrictions, and observant Muslims of various schools.

Aquaculture

Catfish are easy to farm in warm climates, leading to inexpensive and safe food at local grocers. About 60% of U.S. farm-raised catfish are grown within a 65-mile (100-km) radius of Belzoni, Mississippi.<ref>

</ref> Channel catfish (Ictalurus punctatus) supports a $450 million/yr aquaculture industry.<ref name=tol/>

Catfish raised in inland tanks or channels are considered safe for the environment, since their waste and disease should be contained and not spread to the wild.<ref>

</ref>

In Asia, many catfish species are important as food. Several walking catfish (Clariidae) and shark catfish (Pangasiidae) species are heavily cultured in Africa and Asia. Exports of one particular shark catfish species from Vietnam, Pangasius bocourti, has met with pressures from the U.S. catfish industry. In 2003, The United States Congress passed a law preventing the imported fish from being labeled as catfish.<ref>"'Catfish' bred in Asia move up on U.S. food chain"$, Associated Press via L.A. Times, 28 November 2006</ref> As a result, the Vietnamese exporters of this fish now label their products sold in the U.S. as “basa fish.” Trader Joe's has labeled frozen fillets of Vietnamese Pangasius hypophthalmus as “striper.”<ref>Cole, Nancy (27 January 2006) Catfish imports not slowing. Northwest Arkansas News</ref>

There is a large and growing ornamental fish trade, with hundreds of species of catfish, such as Corydoras and armored suckermouth catfish (often called plecos), being a popular component of many aquaria. Other catfish commonly found in the aquarium trade are banjo catfish, talking catfish, and long-whiskered catfish.

Catfish as invasive species

is an invasive species in Florida.]] Representatives of the genus Ictalurus have been introduced into European waters in the hope of obtaining a sporting and food resource. However, the European stock of American catfishes has not achieved the dimensions of these fish in their native waters, and have only increased the ecological pressure on native European fauna. Walking catfish have also been introduced in the freshwaters of Florida, with the voracious catfish becoming a major alien pest there. Flathead catfish, Pylodictis olivaris, is also a North American pest on Atlantic slope drainages.<ref name=tol/> Pterygoplichthys species, released by aquarium fishkeepers, have also established feral populations in many warm waters around the world.<ref>

</ref><ref>

</ref><ref>

</ref><ref>

</ref><ref>

</ref>

Dangers to humans

While the vast majority of catfish are harmless to humans, a few species are known to present some risk. Perhaps the most notorious of these is the candiru, due to the way it is reputed to parasitize the urethra, though there is only one documented case of a candiru attack on a human.

Since 2007, the Goonch catfish has also gained attention<ref>

</ref><ref>

</ref> following a series of fatal underwater attacks which have been alleged by biologist Jeremy Wade to have been from unusually large goonch.

The Wels catfish has also been reputed to kill humans (especially young children), and while there are no documented cases of fatalities, larger specimens are known to cause serious injuries in rare instances.<ref>

</ref> In addition, other species are reputed to be dangerous to humans as well, but with less definitive evidence.

Many catfish species have “stings” (actually non-venomous in most cases) embedded behind their fins; thus precautions must be taken when handling them.

Taxonomy

The catfish are a monophyletic group. This is supported by molecular evidence.<ref name=“Sullivan”/>

Catfish belong to a superorder called the Ostariophysi, which also includes the Cypriniformes, Characiformes, Gonorynchiformes and Gymnotiformes, a superorder characterized by the Weberian apparatus. Some place Gymnotiformes as a sub-order of Siluriformes, however this is not as widely accepted. Currently, the Siluriformes are said to be the sister group to the Gymnotiformes, though this has been debated due to more recent molecular evidence.<ref name=“Nelson”/>

there are about 36 extant catfish families, and about 3,093 extant species have been described.<ref name=ferraris/> This makes the catfish order the second or third most diverse vertebrate order; in fact, 1 out of every 20 vertebrate species is a catfish.<ref name=tol>

</ref>

The taxonomy of catfish is quickly changing. In a 2007 and 2008 paper, Horabagrus, Phreatobius, and Conorhynchos were not classified under any current catfish families.<ref name=ferraris>

</ref> There is disagreement on the family status of certain groups; for example, Nelson (2006) lists Auchenoglanididae and Heteropneustidae as separate families, while the All Catfish Species Inventory (ACSI) includes them under other families. Also, FishBase and the Integrated Taxonomic Information System lists Parakysidae as a separate family, while this group is included under Akysidae by both Nelson (2006) and ACSI.<ref name=“Nelson”/><ref>

</ref><ref>

</ref><ref>

</ref> Many sources do not list the recently revised family Anchariidae.<ref name=Anchariidae>

</ref> The family Horabagridae, including Horabagrus, Pseudeutropius, and Platytropius, is also not shown by some authors but presented by others as a true group.<ref name=“Sullivan”/> Thus, the actual number of families differs between authors. The species count is in constant flux due to taxonomic work as well as description of new species. On the other hand, our understanding of catfish should increase in the next few years due to work by the ACSI.<ref name=“Nelson”>

</ref>

The rate of description of new catfish is at an all-time high. Between 2003 and 2005, over 100 species have been named, a rate three times faster than that of the past century.<ref name=neotropdiversity>

</ref> In June 2005, researchers named the newest family of catfish, Lacantuniidae, only the third new family of fish distinguished in the last 70 years (others being the coelacanth in 1938 and the megamouth shark in 1983). The new species in Lacantuniidae, Lacantunia enigmatica, was found in the Lacantun river in the Mexican state of Chiapas.<ref name=rodiles>

</ref>

According to morphological data, Diplomystidae is usually considered to be the most primitive of catfish and the sister group to the remaining catfish, grouped in a clade called Siluroidei. Recent molecular evidence contrasts the prevailing hypothesis, where the suborder Loricarioidei are the sister group to all catfish, including Diplomystidae (Diplomystoidei) and Siluroidei; though they were not able to reject the past hypothesis, the new hypothesis is not unsupported. Siluroidei was found to be monophyletic without Loricarioid families or Diplomystidae with molecular evidence; morphological evidence is unknown that supports Siluroidei without Loricarioidea.<ref name=“Sullivan”/>

Below is a list of family relationships by different authors. Lacantuniidae is included in the Sullivan scheme based on recent evidence that places it sister to Claroteidae.<ref>

</ref>

Nelson, 2006<ref name=“Nelson”/> Sullivan et al., 2006<ref name=“Sullivan”>

</ref>

  • Unresolved families
    • Cetopsidae
    • Pseudopimelodidae
    • Heptapteridae
    • Cranoglanididae
    • Ictaluridae
    • Amphiliidae
    • Trichomycteridae
    • Nematogenyiidae
    • Callichthyidae
    • Scoloplacidae
    • Astroblepidae
    • Loricariidae
    • Amblycipitidae
    • Akysidae
    • Sisoridae
    • Erethistidae
    • Aspredinidae
  • Doradoidea
    • Mochokidae
    • Doradidae
    • Auchenipteridae

| style=“width:25%;”|

  • Siluroidea
    • Siluridae
    • Malapteruridae
    • Auchenoglanididae
    • Chacidae
    • Plotosidae
    • Clariidae
    • Heteropneustidae
  • Bagroidea
    • Austroglanididae
    • Claroteidae
    • Ariidae
    • Schilbeidae
    • Pangasiidae
    • Bagridae
    • Pimelodidae

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  • Unresolved families
    • Cetopsidae
    • Plotosidae
    • Chacidae
    • Siluridae
    • Pangasiidae
  • Suborder Loricarioidei
    • Trichomycteridae
    • Nematogenyiidae
    • Callichthyidae
    • Scoloplacidae
    • Astroblepidae
    • Loricariidae
  • Clarioidea
    • Clariidae
    • Heteropneustidae
  • Arioidea
    • Ariidae
    • Anchariidae
  • Pimelodoidea
    • Pimelodidae
    • Pseudopimelodidae
    • Heptapteridae
    • Conorhynchos
  • Ictaluroidea
    • Ictaluridae
    • Cranoglanididae

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  • Doradoidea (sister to Aspredinidae)
    • Doradidae
    • Auchenipteridae
  • “Big Asia”
  • “Big Africa”
    • Mochokidae
    • Malapteruridae
    • Amphiliidae
    • Claroteidae
    • Lacantuniidae
    • Schilbeidae

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==See also==

==References==

==External links== <!–Please keep this uncluttered. If you wish to add a link, discuss it on the talk page first.–>

Edible fish Commercial fish Siluriformes Ostariophysi Fish of Africa Fish of Asia Fish of Europe Fish of South America Fish of North America Fish of Central America Soul food

catfish.txt · Last modified: 2019/12/05 08:35 (external edit)