Melamine Bhuna Anyone?

Scientists and consumer groups are raising concerns that fish from China might also be contaminated with melamine.

China is the world's largest producer of farm-raised seafood, exporting billions of dollars worth of shrimp, catfish, tilapia, salmon and other fish.

Industry experts say that melamine has been routinely added into fish and animal feed to artificially boost protein readings.

And new research suggests that, unlike in cows and pigs, the edible flesh in fish that have been fed melamine contains residue of the nitrogen-rich substance.

Laboratory studies in the U.S. of melamine-fed catfish, trout, tilapia and salmon by the FDA's Animal Drugs Research Center found that fish tissues had melamine concentrations of up to 200 parts per million.

That's 80 times the maximum "tolerable" amount set by the FDA for safe consumption.

Tilapia is widely used in Chinese and Indian restaurants in the UK.