Fish use the sense of smell to find their way home

Fish colonies live in Australia's Great Barrier Reef, the world's largest marine sanctuary, often like to hang around ' houses ' because they know where to find food or escape predators.

But at a very young age and unable to swim, fry can drift up to 32 km away. When they grow up and swim, they use their sense of smell to ' sniff ' the ocean currents and find their way home, scientists from the Massachusetts Ocean Biological Research Laboratory (USA) said.

Like some terrestrial animals, eels, catfish and hammerhead sharks are also good at sniffing . Cardinal ornamental fish, which are popularly cultured in family aquariums, prefer to 'settle' in the rock hole where they are born and use their noses to distinguish the stones in the lake.

Meanwhile, virgin fish (popular in the Pacific region) can live in many reefs and use their sense of smell to find their way back safely after drifting to warmer waters. Although it is not possible to prove the smell-oriented fish, Boston University professor Jelle Atema says that beyond the 800-meter radius, the hearing organ could no longer help fish in tracking the direction of swimming.

Hoang Hoang