Species of fish
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The spotted sand-diver ("Trichonotus setiger") is a perciform fish in the family Trichonotidae. "T. setiger" is the type species of genus "Trichonotus".
Description.
Spotted sand-divers reach a maximum length of . They have 39 to 41 soft dorsal spines. Males can be distinguished from females by their long dorsal fin rays and larger size.
Distribution.
"T. setiger" can be found from the Persian Gulf to Queensland and Melanesia
Habits.
Spotted sand-divers occur in large groups where there are steep sand slopes. They hover above clean sandy substrates and dive into the sand when disturbed. The habitat usually contains some silt. They are normally observed resting on sea bed, leaving substrate to catch zooplankton, or to display. Some species in the genus "Trichonotus" are protogynous hermaphrodites.
References.
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