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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 ...
In Africa, this catfish has been reported as being second in size only to the vundu of the Zambesian waters, [4] although FishBase suggests the African sharptooth catfish surpasses that species in both maximum length and weight. [5] [6] C. gariepinus has an average adult length of 1–1.5 m (3 ft 3 in – 4 ft 11 in).
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.
Here the gulper catfish live in crevices between rocks and dart out to catch passing prey such as angelfish. [11] In aquariums gulper catfish will feed during both day and night, but it is suspected the species is nocturnal and crepuscular in the wild, giving it an additional advantage when hunting along river banks for its often sleeping prey. [7]
Ancistrus is a genus of nocturnal freshwater fish in the family Loricariidae of order Siluriformes, native to freshwater habitats in South America and Panama.Fish of this genus are common in the aquarium trade where they are known as bushynose or bristlenose catfish.
Like virtually all catfish, it is nocturnal, preferring to feed at night, although young feed during the day. It generally does not get as large as the channel or blue catfish, with average adult weights are in the 1-to-2-pound (0.45 to 0.91 kg) range, and almost never as large as 4 pounds (1.8 kg). It has a typical length of 6–14 inches (15 ...
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]
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 ...