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 in vegetated areas. Males of this species can reach a length of TL while females grow to TL. This species is the smallest freshwater fish in Europe with a mature female measuring only SL.