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Although goby-like in many ways, sleeper gobies lack the pelvic fin sucker and that, together with other morphological differences, is used to distinguish the two families. The Gobiidae and Eleotridae likely share a common ancestor and they are both placed in the order Gobiiformes, along with a few other small families containing goby-like fishes.
Valenciennea wardii, Ward's sleeper, Ward's sleeper goby, is a species of goby native to the Indian Ocean and the western Pacific Ocean in bays, reefs and lagoons at depths of from 12 to 35 metres (39 to 115 ft). It can be found on sandy or silty substrates.
Valenciennea is a genus of small, bottom-dwelling fish in the family Gobiidae.They are found over sandy bottoms, often at coral reefs in the Indo-Pacific.The members of the genus tend to rest directly on the substrate for extended periods of time.
Sleeper goby may refer to three families of goby formerly classified as part of the single family Eleotridae, and a genus from the family Gobiidae: Milyeringidae , a family of Gobiiform cave fish from Western Australia and Madagascar
The Butidae are one of the two families which are given the common name "sleeper gobies", and indeed were formerly classified as subfamily of the traditional sleeper goby family Eleotridae, although some phylogenies have placed them closer to the Oxucerdidae and the Gobiidae than to the Eleotridae.
Its common names include the blueband goby, golden-head sleeper goby, and pennant glider. [1] It is native to the Indian Ocean and the western Pacific Ocean where it can be found in outer lagoons and the seaward side of reefs. It occurs in a variety of substrates, sand, rubble, hard, at depths of from 1 to 25 metres (3.3 to 82.0 ft) (usually at ...
Amblygobius phalaena, the Sleeper Banded goby, white-barred goby, is a species of goby native to tropical reefs of the western Pacific Ocean and through the central Indo-Pacific area at depths of from 2 to 20 metres (6.6 to 65.6 ft).
Freshwater sleepers are a small family, the Odontobutidae, of gobiiform ray-finned fishes native to freshwater rivers flowing into the South China Sea and the northwestern Pacific Ocean. The family consists of about 22 species in six genera .