http://web.orange.co.uk/article/quir...hocoholic_fish
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An overweight fish is being weaned off a diet of chocolate biscuits after outgrowing its tank.
Aquarium staff were baffled when the 8.8lb giant gourami called Gary rejected normal food after being donated to them, reports The Sun.
Then the previous owners of the exotic Asian freshwater fish admitted feeding it only with chocolate-covered biscuits.
Experts at the Sea Life London Aquarium had to put crushed Kit Kat pieces inside grapes and banana slices to tempt the 15.7in-long fish on to a normal diet.
Gary's handler Rebecca Carter said: "I've never heard of a fish being fed chocolate, let alone brought up entirely on the stuff.
"Gary doesn't appear to have suffered ill effects. Most fish wouldn't be able to survive on Kit Kats but gouramis are very hardy."