Bert Willaert / Steinitz' Shrimp goby (Amblyeleotris steinitzi), Kimbe Bay, West New Britain, Papua New Guinea

Nick Upton / Common prawns (Palaemon serratus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, with a a Rock goby (Gobius paganellus) swimming past, Cornwall, England, UK, September.

Nick Upton / Rock goby (Gobius paganellus) stealing food from a scavenging Common prawn (Palaemon serratus) in a rockpool, Cornwall, England, UK, September.

Tony Wu / Red-margin shrimp goby (Amblyeleotris rubrimarginatus) Bootless Bay, Papua New Guinea

Tony Wu / Yellow shrimp goby (Cryptocentrus cinctus) Waga Waga in Milne Bay, Papua New Guinea

Pascal Kobeh / Djeddah snapping shrimp (Alpheus djeddensis) and Steinitz's goby (Amblyeleotris steinitzi) at hole, these species are symbiotic with the goby guarding the shrimp as it digs, coast of Dhofar and Hallan...

Franco Banfi / Banded shrimpgoby (Cryptocentrus cinctus) sharing burrow with Alpheus shrimp (Apheus sp) Cendana Jetty, Waigeo island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Juergen Freund / Banded shrimp goby (Cryptocentrus cinctus) yellow morph with snapping shrimp partner (Alpheus sp.) Papua New Guinea.

Juergen Freund / Banded shrimp goby (Cryptocentrus cinctus) yellow morph, Papua New Guinea.

GEORGETTE DOUWMA / Banded prawn goby pair {Cryptocentrus cinctus} with blind Alpeid shrimp at entrance to burrow. Shrimps maintain the burrow while Gobies act as lookout.

GEORGETTE DOUWMA / Banded prawn goby fish pair {Cryptocentrus cinctus} with alpeid shrimps, Borneo. Gobies live in burrow with blind prawn. Prawns maintain the burrow while Gobies act as lookout.

David Fleetham / Gold-specked prawn-gobies (Ctenogobiops pomastictus), pair, and Snapping shrimp, at entrance to burrow, Rarotonga, Cook Islands.