Two public interest groups are suing the US Food and Drug Administration (FDA) for allowing the sale of GM fish.
The opponents want the FDA and the Department of Health and Human Services to stop the sales of transgenic fishes, and they have asked a judge to suspend sales until the fish become government regulated.
The FDA issued a statement last month saying that it would not regulate GM fish: "Because tropical aquarium fish are not used for food purposes, they pose no threat to the food supply. There is no evidence that these genetically engineered zebra danio fish pose any more threat to the environment than their unmodified counterparts which have long been widely sold in the United States. In the absence of a clear risk to the public health, the FDA finds no reason to regulate these particular fish."
The move effectively gave the green light for the sales of GloFish across much of the USA.