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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 .
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.
The sleeper gobies are a family of twenty six genera and 126 species found in freshwater and mangrove habitats throughout the tropical and temperate parts of the world as far north as the eastern United States and as far south as Stewart Island, New Zealand, except for the eastern Atlantic.
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.
Gobiidae or gobies is a family of bony fish in the order Gobiiformes, one of the largest fish families comprising more than 2,000 species in more than 200 genera. [1] Most of gobiid fish are relatively small, typically less than 10 cm (3.9 in) in length, and the family includes some of the smallest vertebrates in the world, such as Trimmatom nanus and Pandaka pygmaea, Trimmatom nanus are under ...
Valenciennea helsdingenii is a species of goby from the Indo-Pacific.It is commonly known as the twostripe goby, black-lined sleeper goby, or railway sleeper goby.It can grow up to a length of 25 cm (9.8 in) and is distinguishable by two prominent orange to black lines running longitudinally through its body.
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).
Valencienna sexguttata, the chalk goby, sixspot goby, sleeper blue dot goby, is a species of goby native to the Indian Ocean and the western Pacific Ocean.It inhabits bays or lagoons in waters of from 3 to 25 metres (9.8 to 82.0 ft) with silt or sand substrates with larger pieces of rock under which to burrow.