Constantinos Petrinos / Yellow stripe clingfish (Diademichthys lineatus) living in association with the Fire Urchin (Astropyga radiata) Lembeh Strait, North Sulawesi, Indonesia.

Christophe Courteau / Shore clingfish / Cornish sucker (Lepadogaster lepadogaster) portrait, Brittany, France, January.

Constantinos Petrinos / Yellow stripe clingfish (Diademichthys lineatus) living in association with the Fire Urchin (Astropyga radiata) Lembeh Strait, North Sulawesi, Indonesia.

SCOTLAND: The Big Picture / Clingfish amongst gravelly maerl in no take zone, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August.

SCOTLAND: The Big Picture / Clingfish amongst gravelly maerl, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August.

Pascal Kobeh / Feather star clingfish (Discotrema crinophila) living in crinoid, New Caledonia, Pacific Ocean. This fish perfectly mimics its host and has modified pelvic fins that act as suction cups for attachment...

Christophe Courteau / Shore clingfish / Cornish sucker (Lepadogaster lepadogaster) dorsal view. Brittany, France, January.

Christophe Courteau / Shore clingfish / Cornish sucker (Lepadogaster lepadogaster) portrait, Brittany, France, January.

Tony Wu / Clingfish (Aspasma minima) living on a large growth of brown algae (Ecklonia cava). As seen here, the fish is capable of turning its eyes to look directly overhead. Kanagawa, Japan,

Sergio Hanquet / Clingfish (Opeatogenys cadenati), Tenerife, Canary Islands.

Sergio Hanquet / Connemarra clingfish (Lepodogaster candolii) Tenerife, Canary Islands.

Sergio Hanquet / Connemarra clingfish (Lepodogaster candolii) Tenerife, Canary Islands.