The "'broadhead sleeper "'( " Eleotris melanosoma " ) is a species of sleeper goby native to marine, fresh, and brackish waters from coastal eastern Africa through southern Asia to the islands of the western Pacific Ocean.
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The "'Prince Regent gudgeon "'( " Hypseleotris regalis " ) is a species of sleeper goby endemic to Australia, where it is only known to occur in clear, rocky pools in the Prince Regent Reserve in Western Australia.
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""'Eleotris sandwicensis " "', the "'Sandwich Island sleeper "', is a species of sleeper goby endemic to the Hawaiian Islands, where it can be found in marine, fresh, and brackish waters around the coast.
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The "'dusky sleeper "'or "'brown spinecheek gudgeon "'( " Eleotris fusca " ) is a species of sleeper goby found in many Indo-West Pacific regions, where it can be found in lagoons, estuaries, and freshwater streams with muddy bottoms.
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However, most are much smaller, such as the fresh-and brackish-water species from Australia such as " Hypseleotris ", known locally as "'gudgeons "'( not to be confused with the Eurasian freshwater cyprinid " Gobio gobio ", also known as the gudgeon and after which the Australian sleeper gobies were likely named ).
The largest number of species are found in China ( more than 50 ) and Brazil ( 25 ), Stygobite fish are known from a wide range of families, including Amblyopsidae ( U . S . cavefishes ), Astroblepidae ( naked sucker-mouth catfishes ), Balitoridae ( hillstream loaches ), Bythitidae ( brotulas ), Characidae ( characids ), Clariidae ( airbreathing catfishes ), Cyprinidae ( carps and allies ), Cyprinodontidae ( pupfishes ), Eleotridae ( sleeper gobies ), Gobiidae ( gobies ), Heptapteridae ( heptapterid catfishes ), Ictaluridae ( ictalurid catfishes ), Loricariidae ( loricariid catfishes ), Nemacheilidae ( stone loaches ), Sternopygidae ( glass knifefishes ), Synbranchidae ( swamp eels ) and Trichomycteridae ( pencil catfishes ).
