Apletodon incognitus
Apletodon incognitus is a species of clingfish of the family Gobiesocidae. The species is endemic to north-eastern Atlantic Ocean to north-western Mediterranean Sea. The juvenile fish which measure around standard length (SL) are frequently recorded as having an association with sea urchins and in beds of "Posidonia oceanica". The adults hide under stones covered with red coralline algae and in the empty shells of mussels near beds of "Posidonia" and "Cymodocea nodosa". Within the beds of "Posidonia" it is often found in sympatry with "Opeatogenys gracilis".