Ohrid Blue 7

While Lake Ohrid is special as such, by far the most spectacular quality is its impressive endemism. Similar to Lake Baikal or Lake Tanganyika, Lake Ohrid harbors endemic species covering the whole food-chain, from phytoplankton and sestile algae (20 species; e. g. , Cyclotella fottii), over plant species (2 species; e. g. , Chara ohridana), zooplankton (5 species; e. g. , Cyclops ochridanus), cyprinid fish (8 species; e. g. , Pachychilon pictus), to predatory fish (2 trout species; Ohrid trout Salmo letnica and Belvica Acantholingua ohridana) and finally its diverse endemic bottom fauna (176 species; e. g. Ochridagammarus solidus), with particularly large endemism among crustaceans, molluscs, sponges and planarians. Whereas the endemic species list cited above is based on morphological and ecological characteristics, some recent applications of molecular genetic techniques underline the difference of the fauna from common European taxa, as well as the old age of the lake

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