Istiblennius is a genus of combtooth blennies found in the Pacific and Indian Oceans. The generic name is a compound noun composed of istio the Greek for sail, referring to the high dorsal fin of the type species, Istiblennius muelleri, and blennius which is derived from a word for mucus and refers to the scaleless bodies that characterise the Blenniidae. The 14 currently recognized species in this genus are: Istiblennius bellus (Günther, 1861) (imspringer) Istiblennius colei (Herre, 1934) Istiblennius dussumieri (Valenciennes, 1836) (streaky rockskipper) Istiblennius edentulus (J. R. Forster & J. G. Schneider, 1801) (rippled rockskipper) Istiblennius flaviumbrinus (Rüppell, 1830) Istiblennius lineatus (Valenciennes, 1836) (lined rockskipper) Istiblennius meleagris (Valenciennes, 1836) (peacock rockskipper) Istiblennius muelleri (Klunzinger, 1879) Istiblennius pox V. G. Springer & J. T. Williams, 1994 (scarface rockskipper) Istiblennius rivulatus (Rüppell, 1830) Istiblennius spilotus V. G. Springer & J. T. Williams, 1994 (spotted rockskipper) Istiblennius steindachneri (Pfeffer, 1893) Istiblennius unicolor (Rüppell, 1838) (pallid rockskipper) Istiblennius zebra (Vaillant & Sauvage, 1875) (zebra blenny)
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