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Tryssogobius coloni is a species of goby fish belonging to the family Gobiidae. Here are some key characteristics and facts about Tryssogobius coloni:

1. Appearance: Tryssogobius coloni has a small, elongated body with a pointed snout. It is typically translucent to pale in coloration, sometimes with faint markings or patterns on the body. The fins may have subtle markings or be slightly pigmented.
2. Size: They are relatively small, growing to about 3-5 centimeters (1.2-2 inches) in length.
3. Habitat: This species is found in the tropical Indo-Pacific region, including the Red Sea, and ranging across the Indian Ocean to the western Pacific Ocean. They inhabit shallow coastal waters, often near coral reefs, rubble areas, and sandy bottoms where they can find shelter and food.
4. Behavior: Tryssogobius coloni is a bottom-dwelling fish that spends much of its time near the substrate. They are generally shy and cautious, often retreating into crevices or burrows when approached.
5. Diet: They feed primarily on small crustaceans, zooplankton, and other tiny invertebrates that they can find in the sand or among coral rubble.