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The mudskipper pectoral fin differs from most actinopterygian fishes in that the radials of the mudskipper pectoral fin are elongated and protrude from the body wall. This unusual morphology creates a pectoral fin with two fin segments (the radials and the rays) and two movable hinge joints: a 'shoulder' joint where the cleithrum meets the ...
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.
Atlantic mudskippers do not have a membrane that covers the gill chambers; instead, they are able to control the opening and closing of the gill chambers. [7] The gill chambers may be controlled through either the muscles around the slits, or through the differences in partial pressures . [ 7 ]
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 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.
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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]
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]