Question

Which one of the following fish can be cultured both in brackish water and fresh water?

• A. Catla
• B. Catfish
• C. Common carp
• D. Seabass

Hint:

Euryhaline Cultivable Fishes (0--35 ppt): ASIAN SEABASS (Lates calcarifer), Milkfish (Chanos chanos), Nile Tilapia, Pearlspot (Etroplus suratensis).

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Euryhaline finfish aquaculture: the Asian seabass Barramundi (Lates calcarifer) is a catadromous, highly euryhaline teleost cultured across salinity regimes from 0 ppt (freshwater) to 35 ppt (marine).

Step 2: Detailed Explanation:
Salinity tolerance and culture environments of aquaculture finfishes:
1. Asian Seabass Barramundi (Lates calcarifer) (D): A highly euryhaline catadromous perciform fish that lives naturally in marine, estuarine, and freshwater rivers. Possesses remarkable branchial osmoregulatory plasticity, allowing fingerlings to be successfully cultured in freshwater ponds, brackishwater impoundments, and marine coastal cages ($0 - 35\text{ ppt}$).
2. Catla Common Carp: Strictly stenohaline freshwater carps ($< 2 - 5\text{ ppt}$).
3. (Milkfish and Tilapia are also euryhaline, but among options, Seabass is the classic euryhaline species).

Step 3: Final Answer:
Thus, Seabass can be cultured in both brackish water and fresh water, corresponding to option (D).