(Posidonichthys hutchinsi)
Posidonichthys hutchinsi, The Posidonia clingfish, is a species of clingfish native to the Australia coast. This species grows to a length of 2 centimetres (0.79 in) SL. This species is the only known member of its genus. Pale green to pale blue with fine spots forming dark reticulations on back and sides, larger blue spots often on back, and a pinkish to brown line from snout to gill cover.