A horrified woman says her goldfish has grown into a flesh-eating monster.

Bizarre on Female First

Bizarre on Female First

Alexandria Miller - from Chicago in the US - bought Gerald the goldfish in 2018 and it has since grown to a whopping 12 inches.

In a shocking twist, she admitted she has to keep the fish isolated from his tank mates as he has eaten several of them.

Alexandria explained: ''When I first got him, he was in a plastic bag and was just under two inches. He just looked like your regular goldfish and I thought they grew to their environment so I was expecting him to just stop growing but within a month of me having him he was already getting bigger.''

The 28-year-old admits that Gerald gets ''grumpy'' when he is hungry.

Alexandria said: ''He seems to get grumpy towards me - but if I put a smaller fish in there with him, he will eat them which he has done several times.''