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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.
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.
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Boleophthalmus birdsongi is the only species of its genus to have a lateral line stripe and lack a lower jaw teeth notch. Compared to the only other Boleophthalmus species to occur in Australia, Boleophthalmus caeruleomaculatus, B. birdsongi is lighter in colouration and has less second dorsal fin and anal fin elements. [1]
Like other mudskippers, Boleophthalmus boddarti is capable of moving on land, and uses its pectoral and pelvic fins to move about on the surface of tidal flats in its native range at low tide. The fish is boldly patterned, with rows of blue spots along its flanks and cheeks, as well as dark bands running down its body.
The Darwin's mudskipper has a body shape and dorsally pultruding eyes similar to other mudskippers. They have a maximum length of 4.6 cm. It has 5 – 7 dorsal spines, 10 – 12 dorsal rays, 1 anal spine, and 11 – 13 anal rays. Its greatest distinguishing characteristic from other mudskippers is its greatly reduced first dorsal fin in both sexes.
Mudskippers are found in mangrove swamps in Africa and the Indo-Pacific; they frequently come onto land, and can survive in air for up to 3-1/2 days. [5] Mudskippers breathe through their skin and through the lining of the mouth (the mucosa) and throat (the pharynx). This requires the mudskipper to be wet, limiting them to humid habitats.
The shuttles hoppfish or shuttles mudskipper (Periophthalmus modestus) is a species of mudskippers native to fresh, marine and brackish waters of the northwestern Pacific Ocean from Vietnam to Korea and Japan. This species occurs in muddy estuaries, tidal flats and swamps and marshes and is capable of remaining out of the water for up to 60 ...