Q1. Which of the following is a brackish-water fish?
A Perch
B Pompano Correct
C Loach
D Rohu
Explanation
Pompano is commonly associated with marine and brackish-water aquaculture, especially in coastal and estuarine environments where salinity is present. Perch is a broad common name and many familiar perch species are freshwater fish, so it does not fit the specific brackish-water clue here. Loach is generally a freshwater bottom-dwelling fish. Rohu is a major Indian carp and is cultivated mainly in freshwater ponds and rivers. Thus the brackish-water fish in this set is Pompano.