Kalmar "Roughtail Stingray" tana nufin jinsin stingray mai sunan kimiyya "Dasyatis centroura". Roughtail Stingray babban dabba ne, dabbar marine da ake samunta a yammacin Tekun Atlantika, daga North Carolina zuwa Brazil. sunanta. Yana da lebur, jiki mai siffar lu'u-lu'u wanda yawanci launin ruwan kasa ne ko launin toka, mai farin ciki. Roughtail Stingray sananne ne da wutsiya mai guba, wanda yake amfani da shi don tsaro da kuma kama ganima. a kan wutsiyarsa da dafi.