Which one is a true fish?

Options

A. Jellyfish
B. Starfish
C. Dogfish
D. Silverfish

Answer

C

Explanation

Jellyfish or jellies are approximately cylindrical vase shaped individuals of phylum-Cnidaria. These are free swimming marine animals consisting of a gelatinous umbrella shaped bell (pulsate for locomotion) and tentacles (to capture prey). Starfish are star shaped echinoderms. These are marine invertebrates which have a central disc and five arms. (tube feet for locomotion)
Scoliodon (dog fish) belongs to the class-Chondricythes, i.e., pisces. These fishes are known as dog fish due to their, ability to smell, Lepismasacharina commonly known as silver fish is well wingless insect belongs to phylum-Arthropoda.