Here’s what you’ll learn when you read this story:A paper in Genes describes how two different types of fish (sturgeon and paddlefish) bred to create hybrid offspring. The creation of these hybrid “sturddlefish” was accidental and occurred in a lab in Hungary. Researchers were trying to breed Russian sturgeons in captivity because the fish is endangered. Scientists created the “sturddlefish,” a hybrid between a Russian sturgeon (Acipenser gueldenstaedtii) and an American paddlefish, entirely by accident. But the researchers didn’t expect the sperm and egg to fuse and create a new hybrid fish.