Economidichthys trichonis

Economidichthys trichonis, the Trichonis dwarf goby, is a species of goby endemic to Lake Trichonis, an oligotrophic lake in western Greece, where it can be found at depths down to 15 m in vegetated areas. Males of this species can reach a length of 3 cm TL while females grow to 2.7 cm TL. This species is the smallest freshwater fish in Europe with a mature female measuring only 1.8 cm SL.