Search results
Results From The WOW.Com Content Network
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 catfish and primarily Clarias batrachus (walking catfish) have been introduced to many different areas of the world, causing problems for native wildlife. The effect of the introduction of these fish varies from area to area, but as they are predatory, they often affect the local wildlife by eating other fish, birds, and amphibians.
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).
Similar to the way humans smell chemicals in the air, fish smell chemicals in the water by tasting them. The olfactory lobes are very large in fish that hunt primarily by smell, such as hagfish, sharks, and catfish. Behind the olfactory lobes is the two-lobed telencephalon, the structural equivalent to the cerebrum in higher vertebrates.
Wallago attu, the boal or helicopter catfish is a freshwater catfish of the family Siluridae, native to South and Southeast Asia. W. attu is found in large rivers and lakes in two geographically disconnected regions (disjunct distribution), with one population living over much of the Indian Subcontinent and the other in parts of Southeast Asia.
The walking catfish has an elongated body shape and reaches almost 0.5 m (1.6 ft) in length and 1.2 kg (2.6 lb) in weight. [3] Often covered laterally in small white spots, the body is mainly coloured a gray or grayish brown. [5] This catfish has long-based dorsal and anal fins, [5] as well as several pairs of sensory barbels.
Airbreathing catfish comprise the family Clariidae of the order Siluriformes. Sixteen genera and about 117 species of clariid fishes are described; all are freshwater species. [ 1 ] Other groups of catfish also breathe air, such as the Callichthyidae and Loricariidae .
The Bagridae are a family of catfish that are native to Africa and Asia (all other genera) from Japan to Borneo. [3] It includes about 245 species. These fish are commonly known as naked catfishes or bagrid catfishes. Many large bagrids are important as a source of food. Some species are also kept as aquarium fishes. [3]