Body style flat, fort short, curved, bony dorsal fin is high, with plates welded together. , Fin tail is cut transparencies. , With blue small scales, small eyes, small mouth, eating aquatic plants for food.
Prolate trunk style, short, curved, fortress, there are height, bone charcoal is connecting plate, tail fins, cut the sheets into a small Flake blue, small eyes, small mouths, eat algae, plants and food.
The flat body side, short, Fort bend, fins back to the bone, there is a sheet attached, tail fins is a clear, direct, a little blue shutters, small eyes, small mouth, eat seaweed plant food is a water.