Well...... reptiles also have watertight skin so that kind of says why they have scaly skin. This skin keeps their body from drying out in the sun.
Like all reptiles, rattlesnakes have a body covering of scaly skin.
Alligators are reptiles. All reptiles have a body covering of scaly skin. They do not have individual scales like fish do.
some fish and some reptiles
Anacondas are reptiles. All reptiles have a covering of scaly skin. They do not actually have individual scales like fish do.
Snakes are reptiles. All reptiles have a covering of scaly skin. They do not actually have individual scales like fish do.
Snakes are reptiles. All reptiles have a covering of scaly skin. They do not actually have individual scales like fish do.
Snakes are reptiles. All reptiles have a covering of scaly skin. They do not actually have individual scales like fish do.
Snakes are reptiles. All reptiles have a covering of scaly skin. They do not actually have individual scales like fish do.
Goannas are lizards and, like all lizards and other reptiles, they have a body covering of scaly skin. They do not actually have scales.
The body covering of a boa are scales, like most reptiles.
Chameleons are reptiles. All reptiles have a covering of scaly skin. They do not actually have individual scales like fish do.
Alligators are reptiles. All reptiles have a covering of scaly skin. They do not actually have individual scales like fish do.