In which of the following families do fishes have eyes on the right side of the body?

Correct option is A

Correct Answer: (a) Pleuronectidae
Explanation:
→ Pleuronectidae (right-eyed flounders) typically have both eyes migrated to the right side of the body.
→ This asymmetrical adaptation helps them lie flat on the seafloor.
→ Important commercial flatfishes in temperate waters.
Information Booster:
→ Eye migration occurs during metamorphosis.
→ Camouflage abilities rely on pigment control.
→ Common genera: Pleuronectes, Hippoglossoides.
Additional Information (Other Options):
(b) Bothidae – left-eyed flounders.
(c) Cynoglossidae – tongue soles; eyes on left side.
(d) Citharidae – mixed traits but not exclusively right-eyed.