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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.
Breeding habits are also variable. Corydoradines breed over the substrate (such as rocks, logs, or leaves) as most catfish. However, the members of the subfamily Callichthyinae are known for building and guarding floating foam bubble nests; Hoplosternum littorale is reported to have the most complex nest structure. [17]
Twig catfish can be induced to breed at any time, if in good condition, in captivity. [2] In the aquarium the male will clean a hard surface (usually the aquarium wall) and the female lays its eggs at night or early morning. [2] The female normally lays a clutch of about 60 to 80 eggs on this surface.
If ovuliparity is used, most of the fishes have ovuliparity breeding strategy). [11] In oviparous fish, internal fertilisation requires the male to use some sort of intromittent organ to deliver sperm into the genital opening of the female. Examples include the oviparous sharks, such as the horn shark, and oviparous rays, such as skates.
The wels catfish (/ ˈ w ɛ l s / or / ˈ v ɛ l s /; Silurus glanis), also called sheatfish or just wels, [2] is a large species of catfish native to wide areas of central, southern, and eastern Europe, in the basins of the Baltic, Black and Caspian Seas.
The Mekong giant catfish (Pangasianodon gigas; Thai: ปลาบึก, RTGS: pla buek, pronounced [plāː bɯ̀k]; Khmer: ត្រីរាជ /trəy riec/; Vietnamese: cá tra dầu), is a large, threatened species of catfish (order Siluriformes) in the shark catfish family (Pangasiidae), native to the Mekong basin in Southeast Asia and adjacent China.
The flathead catfish (Pylodictis olivaris), also called by several common names including mudcat or shovelhead cat, is a large species of North American freshwater catfish in the family Ictaluridae. It is the only species of the genus Pylodictis .
The redtail catfish (Phractocephalus hemioliopterus), is a large species of South American pimelodid (long-whiskered) catfish.It is known in Venezuelan Spanish as cajaro; in Guyana, it is known as a banana catfish, and in Brazil it is known as pirarara, [3] a fusion of words from the indigenous Tupi language: pirá and arara. [4]