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Changing ocean temperatures and currents will force thousands of species to migrate polewards, including cod, herring, plaice and prawns.


 global migration global warming fish pole
Robots that mimic the behaviour of fish have been developed by Japanese car firm Nissan, who believe the technique can be used in crash avoidance systems.


 car crash robot fish swarm artificial intelligence toread
The small black fish swim around the tank; gracefully gliding back and forth with little discernible pattern.
 fish training toread
The dance of the weedy sea dragon takes place every year in the shallow seas off the coast of Australia. During the ghostly dance, two beautifully odd-looking fish mirror each other's every movement. At the end of the ritual, the male fish is the one to get pregnant, giving birth two months later.


 father mother courtship mating fish sea dragon Australia
Male fish that nibble parasites off larger fish punish females of the species when they bite and drive off the bigger fish.
 parasite animal intelligence social fish toread
Whales emitting a low-pitched noise which caused the fish to bunch up. The mammals then stun the fish with their tails before eating them.


 shoal fish whale sound hunting
Prehistoric seas were filled with giant plankton-eating fish which died out at the same time as the dinosaurs, new fossil evidence suggests.


 fish plankton dinosaur ocean giant
Biologists cannot be sure, but they suspect the fish may be a living relict that has survived deep under the ground while its relatives above went extinct.


 blind underground fish Brazil
Deep sea fish species found in the north Pacific Ocean have mysteriously been caught in the southwest Atlantic, on the other side of the world. It is unclear how the animals, a giant rattail grenadier, pelagic eelpout and deep sea squid, travelled so far. Their discovery 15,000km from their usual home raises the possibility that deep sea currents can transport animals from one polar region to another.


 deep sea ocean fish Pacific Ocean travel migration
Male molly fish in Mexico wear a moustache that makes them appear more sexy to females.


 fish moustache hair sex attraction
Discus fish are surprisingly attentive parents, scientists have found. The colourful little creatures are known to feed their offspring with a nutritious mucus on their skin.
 fish parenting toread