Midas blenny Midas blenny Ecsenius midas, known commonly as the Midas blenny, lyretail blenny or golden blenny, is a species of marine fish in the family Blenniidae. The Midas blenny is widespread throughout the tropical waters of the Indo-Pacific area from the eastern coast of Africa, Red Sea included, to the Marquesan Islands. It grows to a size of 13 cm in length. Its normal color is golden orange but it can adapt its color (mimicry) to match the color of the fishes it mixes with. It shows a black spot near the anus. It is often seen in company of the
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.