"Nursehounds are generally harmless to humans.[20] However, 19th-century British naturalist Jonathan Couch noted that "although not so formidable with its teeth as many other sharks, this fish is well able to defend itself from an enemy. When seized it throws its body round the arm that holds it, and by a contractile and reversed action of its body grates over the surface of its enemy with the rugged spines of its skin, like a rasp. There are few animals that can bear so severe an infliction, by which their surface is torn with lacerated wounds."[21] This shark is displayed by many public aquariums and has been bred in captivity.[9]"
Indeed! From the Wikipedia ( Nursehound )
That guy seems a littlecavalier when handling the business end of that fish.