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Catfish (or catfishes; order Siluriformes / s ɪ ˈ lj ʊər ɪ f ɔːr m iː z / 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 ...
Clarias gariepinus or African sharptooth catfish is a species of catfish of the family Clariidae, ... It is a nocturnal fish like many catfish. It feeds on living, ...
There are a dozen species of catfish that can be found in Ohio waters, ... Best-known of this enigmatic group of largely nocturnal fishes is the stonecat madtom. While normally 6 to 8 inches in ...
The species is commercially used as an aquarium species. [4] The polka-dot African catfish is mostly nocturnal. [3] These catfish will excavate the substrate and may nibble plants. They eat smaller live foods and prepared foods. They prefer a water temperature of 24 to 28 °C (75 to 82 °F), a pH of 6.0–8.0 and a hardness of 5–19 dGH. [1]
Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.
Most species prefer being in groups and many species are found in schools or aggregations of hundreds or even thousands of individuals, usually of a single species, but occasionally with other species mixed in. Unlike most catfishes, which are nocturnal, these species are nocturnal while also being active during the daytime. [2]
Electric catfish are usually nocturnal and carnivorous. [2] Some species feed primarily on other fish, incapacitating their prey with electric discharges, [2] but others are generalist bottom foragers, feeding on things like invertebrates, fish eggs, and detritus. [4] The largest can grow to about 1.2 meters (3 ft) long, but most species are ...
Driftwood catfishes are nocturnal. Some of the smaller species are known to hide in logs and crevices during the day, and come out to feed at night. Some larger species can consume fruits and insects, and are probably omnivorous.