Giant goby Giant goby The giant goby ("Gobius cobitis") is a species of goby native to coastal marine and brackish waters of the eastern Atlantic, the Mediterranean Sea and the Black Sea at depths of from . This species is of minor importance to commercial fisheries and is also popular as a game fish. The giant goby, which grows to in length, is greyish to olive brown with 'pepper and salt' markings. These are especially notable in smaller specimens. in the breeding season the male is darker than the female. The body is covered in small scales, and the tail stalk is
Monkey goby as amphipods and shrimp. In the Danube lakes Yalpug and Kugurluy, the diet of the monkey goby consists of amphipods, molluscs, and Oligochaeta. In the Khadzhibey Estuary a dozen species of prey make up the diet of monkey goby. Polychaetes, larvae of insects, and shrimp are present in the diet year round. Seasonal dietary additions include crabs such as "Rhithropanopeus harrisii", sea weed such as "Zostera marina", and amphipods such as "Marinogammarus olivii". Certain planktonic crustaceans are also present in the diet of adult gobies. In the northwestern Black Sea, twelve parasite species are known to infect the monkey goby.