Threefin blenny to rock crevices at any perceived threat. Threefin blennies are diurnal and territorial; many species exhibit sexual dichromatism, with the females drab compared to the males. The second dorsal fin is also extended in the males of some species. Small invertebrates comprise the bulk of the threefin blenny diet. FishBase lists about 150 species in 30 genera: Threefin blenny Threefin or triplefin blennies are blennioids, small perciform marine fish of the family Tripterygiidae. Found in tropical and temperate waters of the Atlantic, Pacific and Indian Oceans, the family contains about 150 species in 30 genera. The family name derives from
Pelagic goby Pelagic goby The pelagic goby (Sufflogobius bibarbatus), also known as the bearded goby , is a species of true goby from the family Gobiidae, native to the southeastern Atlantic Ocean. It is currently the only known member of its genus. It reaches a maximum length of . It has 7 dorsal spines and 12-13 dorsal soft rays. It has a single anal spine and 12-13 anal soft rays. Its fins are dusky to black in color. This goby is demersal, inhabiting depths of in subtropical waters ranging from in the coastal waters of Namibia and South Africa. The bearded goby