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Mudskippers can grow up to 30 cm (12 in) long, and most are a brownish green colour that ranges anywhere from dark to light. During mating seasons, the males will also develop brightly coloured spots in order to attract females, which can be red, green or blue. Unlike other fish, the mudskipper's eyes protrude from the top of its flat head.
Mudskippers (Periophthalmus gracilis shown) are among the most land adapted of fish (excepting, from a cladistic perspective, tetrapods), and are able to spend days moving about out of water. Amphibious fish are fish that are able to leave water for extended periods of time. About 11 distantly related genera of fish are
Periophthalmus gracilis, a species of mudskipper, perched on land. Mudskippers are one type of walking fish. A walking fish, or ambulatory fish, is a fish that is able to travel over land for extended periods of time. Some other modes of non-standard fish locomotion include "walking" along the sea floor, for example, in handfish or frogfish.
Periophthalmodon is a genus of fish in the family Oxudercidae. It is one of the genera commonly known as mudskippers, found along muddy shores, estuaries and lower reaches of rivers in Southeast Asia, Papua New Guinea and Queensland, Australia. [1]
In the wild, mudskippers prefer to eat worms, crickets, flies, mealworms, beetles, small fish, and small crustaceans (sesarmid crabs). [27] Mudskippers kept as pets can eat frozen fare such as bloodworm or artemia and flakes. It cannot eat dried food; however, because its stomach swells up.
The giant mudskipper is highly territorial and aggressive, which they express by mouth gaping, raising their fins, pigment darkening, and chasing. [1] Aside from fighting with their mouths, the giant mudskipper rarely interacts with others of its species and is a solitary animal. [24] A giant mudskipper swimming with its eyes above water.
These fish may use a number of means of locomotion, including springing, snake-like lateral undulation, and tripod-like walking. The mudskipper is able to spend days moving about out of water and can even climb mangroves, although to only modest heights. [116] There are some species of fish that can "walk" along the sea floor but not on land.
The common mudskipper (Periophthalmus kalolo) is a species of mudskipper native to marine and brackish waters of the Indo-Pacific from eastern Africa to Samoa. This species can be found in mangrove forests where it spends most of its time out of the water. This species can reach a length of 14.1 centimetres (5.6 in) SL. [1]