teacup stingray for sale , Stingrays are relatives of sharks, sawfish, skates, and guitarfish, having cartilaginous skeletons rather than true bones. As their name suggests, stingray fish for sale have a venomous barb – actually a modified scale – on their tails, which they use as a defense mechanism. Contrary to popular belief, polka dot stingray for sale do not come at you waving their stingers; you have to step on one or SERIOUSLY harass them to be stung.