Almaco jack caught off Cornwall

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A fish normally found off the coasts of Central America and East Africa has been caught by a fisherman in north Cornwall.

The amberjack was caught by fisherman Phil Trebilock off Crantock, north Cornwall, and was taken to Newquay's Blue Reef Aquarium while still alive.

According to a report from the BBC, experts at the aquarium believe the fish is an Almaco jack, Seriola rivoliana, and that the fish is only the fifth of its kind ever recorded in UK waters.

David Waines of the Aquarium told the BBC: "As far as we're aware it's only the fifth specimen ever recorded in British waters and the first to have been kept alive.

"Sea temperatures around Cornwall peak at around this time of year at around 16-17C so it's perfectly possible for warmer water species to survive.

"However in winter they drop back by 10-12C and therefore exotic fish only have a relatively small window of opportunity to survive."

Waines said that trigger fish (Balistes capricus) and Couches bream (Pagrus pagrus) were being spotted in waters off the south west coast, and that we should expect to see more examples of warm water species coming in.

Amberjacks in the UKIt is not the first time a member of the Seriola genus has made its way to the UK.

Last summer Practical Fishkeeping reported that a fisherman had caught a related species, the Lesser amberjack, Seriola fasciata, while fishing off Ventnor on the Isle of Wight.

The latest species to arrive, Seriola rivoliana, has a circumglobal distribution and is found through the Indo-West Pacific and the Western Atlantic.

However, although it has been recorded in the Mediterranean, it is rare in the Eastern Atlantic. (You can see the distribution of Seriola rivoliana on Fish Mapper).

The fish reaches a length of up to 160cm/5'4" and can weigh as much as 59kg when fully grown. It is a predatory fish which feeds during the day and the night on fishes, squid and cuttlefish.