Nanogoviós is the local name for this Pygmy Goby species, found only in Lake Trichonyis, the largest natural lake in Greece, and its smaller neighbour, Lyssimachia. The adult fish measure no more than 3 cm in length, with females being smaller than males. This makes him the smallest European teleost fish. He inhabits vegetated areas, reaching a depth of around 15 cm. He is under threat from eutrophication, in which the nutrient levels in the lake rise, creating an explosion in algal growth and deoxygenating the water.
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