What are used for protection by fish?
scales fins streams. coral gills Collagen mussels whiskers
A B C D E F G H
Fish are backboned aquatic animals.
scales are used for protection by fish 
What are used for protection by fish? (A) scales (B) fins (C) streams. (D) coral (E) gills (F) Collagen (G) mussels (H) whiskers