Alosa vistonica Alosa vistonica Alosa vistonica is a species of shad, a freshwater fish in the Clupeidae family. It is endemic to a single shallow lake, Lake Vistonida in Greece. It is classified as critically endangered (CR) and is threatened by sewage, industrial effluents, destruction of spawning sites by agricultural development and increased salinity following the opening of a canal into the sea. It has been suspected to be extinct already. "A. vistonica" reaches a maximum length of 17 cm (SL). It is distinguished from other members of its genus entering freshwater of the Mediterranean basin by having 78-97 gill rakers and
Boesemania Boesemania Boesemania is a genus of freshwater fish in the family Sciaenidae. This genus contains the single species Boesemania microlepis. Also known as the boeseman croaker and smallscale croaker, this fish lives in southeast Asian rivers. This is a relatively large species. It can reach in length and in weight. "Boesemania microlepis" lives in Cambodia, Laos, Indonesia (Borneo and Sumatra), Malaysia, Vietnam and Thailand. It is found in several rivers such as the Mekong, Chao Phraya River, Mae Klong, Nan River, Tha Chin River, and Bang Pakong River. This species appears to be sedentary. It prefers large, flowing rivers. During