Government officials say that these products were incorrectly labelled and were, in fact, wheat flour.
The FDA is investigating the possibility that these products were intentionally mislabeled by the Chinese companies. A number of consignments of fish feed have now been found to have traces of the melamine chemical found in April in pet foods. The manufacturers have withdrawn these products, even though federal testing shows there to be no risk to human health.
Source: USNews.com