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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.
Butis butis, the crazy fish, duckbill sleeper, or upside-down sleeper, is a species of sleeper goby that are native to brackish and freshwater coastal habitats of the Indian Ocean and the western Pacific Ocean from the African coast to the islands of Fiji. They prefer well-vegetated waters and can frequently be found in mangrove swamps.
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.
Valenciennea puellaris, the Orange-spotted sleeper-goby, Orange-dashed goby, or Maiden goby, Diamond Watchman goby, is a species of goby native to the Indian Ocean and the western Pacific Ocean. It inhabits lagoons and outer reefs where it occurs on sandy substrates with larger pieces of rubble to burrow under.
Goby is also used to describe some species which are not classified within the order Gobiiformes, such as the engineer goby or convict blenny Pholidichthys leucotaenia. [2] The word goby derives from the Latin gobius meaning " gudgeon ", [ 3 ] and some species of goby, especially the sleeper gobies in the family Eleotridae and some of the ...
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. This species can reach a length of 15 centimetres (5.9 in) SL.
The Odontobutidae, or freshwater sleepers, contains 22 species between 6 genera from eastern Asia. This family is the sister to all the other Gobiiformes in a clade with the Rhyacichthyidae. [1] Typhleotris madagascariensis a species in family Milyeringidae
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