A pet shop owner has found the markings on one of his tropical fish appear to spell the word "Allah" in Arabic.
A customer has offered £10 for the fish
An Asian customer spotted the markings on the astronotus ocellatus at Walker Aquatics in Waterfoot, Rawtenstall, Lancs, and offered to buy it for £10.
The customer bought the most expensive tank in the shop to house the fish, at a cost of £700.
Shop owner Tony Walker said he would honour the buyer's £10 offer but said he expected more interest in the fish.
The fish is also believed to have the word "Mohammed" in its markings on its other side.
The South American astronotus ocellatus is also known as an oscar fish.
It typically grows to about 30-40cm long, weighing about 1.5kg.