2 adjectives to describe snappers

There were not many varieties of fish, the most abundant being snappers; of those that were rare Lieutenant Emery made faithful sketches.

And in front of him, facing him, stood a slim, six-foot whipper-snapper of a lieutenant, hatless, coatless, tireless, mercilessa creature whom Buzz at first thought he could snap between thumb and fingerlike that!who made life a hell for Buzz Werner.

2 adjectives to describe  snappers