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BATTY FISH THAT THINKS IT'S A FLATWORM

The newest arrival at Bristol Aquarium is perfect for Halloween – it’s a baby batfish that thinks it’s a poisonous flatworm.

The captive-bred dusky batfish, which is one of six at the Harbourside attraction, mimics the colour, shape and movements of a toxic species of sea worm to avoid predators.

The fish undulate their fins to mimic the worm’s wriggle, enhancing the quality of their deadly flatworm impression even further. 

Olivia Orchart, from the Bristol Aquarium, said: “This particular batfish undergoes one of the most amazing transformations from juvenile to adult form in the marine world.

“As babies they are vulnerable to attack and so the distinctive black and orange markings, coupled with their ‘worm’ dance, persuades would-be predators they are potentially deadly flatworms.

“As they mature the fish change to a much duller silvery-grey colour and tend to congregate in larger shoals to avoid attack. Fully grown they can reach close to half-a-metre in length.

“Our juveniles are part of a pioneering breeding programme at another site which is particularly exciting as this fish has proved difficult to breed in captivity.

“Hopefully ours will grow to maturity and produce offspring of their own over time. At the moment they are on display in our smaller tropical reef displays, however as they develop they will be transferred in to our main ocean display,” she added.

The aquarium is planning a series of frighteningly fun activities, to keep in with the Halloween theme this October half term, where visitors can take part in the Toxic Trail, foul fish dissection, sticky and slimy touch sections and after dark torchlit tours.

  • ‘Venom! Face Your fears’ is at Bristol Aquarium (Saturday October 22nd – Sunday, October 30th). For full details go to www.bristolaqaurium.co.uk, call 0117 929 8929 or find us on Facebook.
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