Fresh water bony fishes are

Fresh water bony fishes survive by

Fresh water bony fishes maintain water balance by

Fresh water bony fishes maintain water balance by

Fresh water bony fishes maintain water balance by

Fresh water bony fishes maintain water balance by :

Excretory substances of marine and fresh water bony fishes respectively

Physiological uremia is observed in some. (A) Fresh water bony fishes (B) Fresh water cartilaginous fishes (C) Marine water bony fishes (D) Marine water cartilagenous fishes

Freshwater bony fishes maintain water balance by

Bony fishes have

Fresh water fishes Have