any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates

any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges

primitive ray with sharp teeth on each edge of a long flattened snout

primitive tropical bottom-dwelling ray with a guitar-shaped body

large venomous ray with large barbed spines near the base of a thin whiplike tail capable of inflicting severe wounds

powerful free-swimming tropical ray noted for `soaring' by flapping winglike fins; usually harmless but has venomous tissue near base of the tail as in stingrays