Australian blenny Australian blenny The Australian blenny ("Ecsenius australianus") are small marine blennioid fish of the genus "Ecsenius". They are small and reddish brown with a white ventral side. Australian blennies inhabit the shallow marine waters of the tropics. They are often found along the Great Barrier Reef and Coral Sea of Australia. This species is believed to be most closely related to "E. fourmanoiri". Similarities between these two species include "broad, darkly dusky bands and stripes" and "dark opercular margin[s]", which are not found in other members of the "Opsifrontalis Group". Preserved specimens also bear similarity to "E. opsifrontalis". However, "E.
Sand goby rounded. In males, there is a conspicuous dark spot on the anterior dorsal fin and in both sexes there is a black patch on the caudal peduncle. The general colour is sandy brown with indistinct dark blotches and reticulations on the dorsal surface and dark striations on the pale fins. The colour of the male darkens during the breeding season and his fins become more coloured. The average size is about . The sand goby normally lives at greater depths than the common goby. It feeds on small invertebrates living on the seabed especially amphipods. It is well camouflaged and