Grass goby goby is a host of larvae of epizootic nematode "Streptocara crassicauda". The grass goby is a dietary item for some commercial fishes, such as the toad goby. In the Sea of Azov, it is used for food by the harbour porpoise. The grass goby is a commercial fish in the Black Sea and the Sea of Azov, the Molochnyi Estuary, Tuzly's Lagoons, and in the Sivash. Grass goby The grass goby ("Zosterisessor ophiocephalus") is a species of goby native to the Mediterranean Sea, the Sea of Azov and the Black Sea. It is currently the only known member of its
Leaping blenny a maximum water depth of 2 metres. They inhabit holes in limestone deposits in intertidal zones, and leap between holes when disturbed, earning them their common name. They are very social at mid-tide, using visual displays to warn off competitors and attract mates. Although they must remain moist to breathe, the blennies are able to breathe air, and avoid submersion by tide waters. Leaping blennies feed primarily off of algae. They are oviparous and form distinct pairs when mating. They can reach a maximum total length of 10 centimetres (4 inches). Leaping blenny The leaping blenny ("Alticus saliens"), also known