Question

________ has a pair of spines on either sides of the tail which are
dangerously sharp, just like a surgeon's knife.​

Answer 1

Answer:

Any of many species of reef-dwelling fishes, most of them brightly coloured, of the family Acanthuridae. They are named "surgeonfish" because they bear erectile, scalpel-like, dangerously sharp spines on either side of the caudal peduncle

Explanation:

SURGEONFISH