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Description and taxonomy. Kryptopterus vitreolus is a small, transparent -bodied, freshwater-dwelling catfish with two long and sensory barbels. Standard lengths for mature fish may range up to 8 cm (3.1 in), but usually only reach around 6.5 cm (2.6 in) in total length. [1] Their bodies are transparent because, like all catfish, they lack scales.
Ameiurus is a genus of catfishes in the family Ictaluridae.It contains the three common types of bullhead catfish found in waters of the United States, the black bullhead (Ameiurus melas), the brown bullhead (Ameiurus nebulosus), and the yellow bullhead (Ameiurus natalis), as well as other species, such as the white catfish (Ameiurus catus or Ictalurus catus), which are not typically called ...
The brown bullhead (Ameiurus nebulosus) is a fish of the family Ictaluridae that is widely distributed in North America. It is a species of bullhead catfish and is similar to the black bullhead (Ameiurus melas) and yellow bullhead (Ameiurus natalis). It was originally described as Pimelodus nebulosus by Charles Alexandre Lesueur in 1819, and is ...
Noturus, madtoms. Prietella. Pylodictis. Satan. Trogloglanis. The Ictaluridae, sometimes called ictalurids, are a family of catfish native to North America, where they are an important food source and sometimes fished for sport. The family includes about 51 species, some commonly known as bullheads, madtoms, channel catfish, and blue catfish.
Amiurus pondersosus Bean, 1880[3] The blue catfish (Ictalurus furcatus) is a large species of North American catfish, reaching a length of 65 in (170 cm) and a weight of 143 lb (65 kg). [4] The continent ’s largest catfish, it can live to 20 years, with a typical fish being between 25–46 in (64–117 cm) and 30–70 lb (14–32 kg).
Clarias cavernicola. The cave catfish[2] (Clarias cavernicola) [3] is a critically endangered species of airbreathing catfish. [1] This cavefish is only known to live in the Aigamas cave, Otjozondjupa region, Namibia. [4][2] It has also been reported from the nearby Dragon's Breath Cave. [5] The golden cave catfish lack pigmentation and are up ...
Close-up of fish melanophores. Fish coloration is produced through specialized cells called chromatophores. The dermal chromatophore is a basic color unit in amphibians, reptiles, and fish which has three cell layers: "the xanthophore (contains carotenoid and pteridine pigments), the iridophore (reflects color structurally), and the melanophore (contains melanin)". [5]
Ameiurus vulgaris (Thompson, 1842) The black bullhead or black bullhead catfish (Ameiurus melas) is a species of bullhead catfish. Like other bullhead catfish, it has the ability to thrive in waters that are low in oxygen, brackish, turbid, and/or very warm. [2] It also has barbels located near its mouth, a broad head, spiny fins, and no scales ...