Which of the following is not a marine fish?

The correct answer is Option (2) → Rohu

Option (1) Hilsa — A marine fish.

Option (2) Rohu — Not a marine fish. NCERT lists Rohu with Catla and common carp among the common freshwater fishes; Hilsa, Sardines and Pomfrets are its marine examples.

Option (3) Sardines — A marine fish.

Option (4) Pomfrets — A marine fish.

Note: This question is from Chapter 9, Strategies for Enhancement in Food Production, of the pre-rationalised NCERT book. This chapter is not in the present NCERT book (2026-27). The extract below is from the pre-rationalised edition.

NCERT Extract (Pre-rationalised edition, Chapter 9, Strategies for Enhancement in Food Production):
Fisheries – “Fishery is an industry devoted to the catching, processing or selling of fish, shellfish or other aquatic animals. A large number of our population is dependent on fish, fish products and other aquatic animals such as prawn, crab, lobster, edible oyster, etc., for food. Some of the freshwater fishes which are very common include Catla, Rohu and common carp. Some of the marine fishes that are eaten include – Hilsa, Sardines, Mackerel and Pomfrets.”