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The climbing perch is euryhaline and can grow to 25 cm (9.8 in) in total length. [2] Outside its native ranges, it is an invasive species that can live without water for 6–10 hours [3] and move on land by crawling/wriggling the body with its pectoral fins. It is believed that the fish may be invading new territories by slipping aboard fishing ...
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.
If it finds itself out of water, it can survive for several hours, and is capable of walking over land to get to water. This means that it is easily observed by beachgoers in its natural range. There are a number of fish that are less adept at actual walking, such as the walking catfish. Despite being known for "walking on land", this fish ...
It also has an "accessory air-breathing organ" on its dorsal area, allowing it to live on dry land for up to six days. They are even thought to hibernate in mud and wait for water to return.
Airbreathing catfish : Amphibious species of this family may venture onto land in wet weather, such as the eel catfish (Channallabes apus), which lives in swamps in Africa, and is known to hunt beetles on land. [8] Labyrinth fish (Anabantoidei). This suborder of fish also use a labyrinth organ to breathe air.
[1] [2] This suprabranchial organ, or labyrinth organ, allows some species the capability of traveling short distances on land (walking catfish). [1] Air-breathing organ of walking catfish. The dorsal fin base is very long and is not preceded by a fin spine. The dorsal fin may or may not be continuous with the caudal fin, which is rounded.
A map shows where Raoni’s armored catfish has been found in northern Brazil, about 1,900 miles northwest of Rio de Janeiro. A map of where Scobinancistrus raonii, or Raoni’s armored catfish ...
Some callichthyids are able to absorb air through their hind guts to move short distances on land. [4] Air stored in their digestive tracts also accounts for 75% of the necessary air for neutral buoyancy. [3] Breeding habits are also variable. Corydoradines breed over the substrate (such as rocks, logs, or leaves) as most catfish.