The correct option is
A Labeo and
Hilsa- Labeo is a carp fish found in sluggish and clear streams and rivers. The adult fishes show chiefly herbivorous habit. Hilsa is a major carp fish which is known for its great taste. It is also an herbivorous fish.
- Catla is a major Indian carp fish. It is a carnivorous fish. Magur is a catfish. It is also a carnivorous fish.
- Shark belongs to the group of elasmobranchs which are characterized by cartilaginous endoskeleton. It is a carnivorous fish. Singla is a river fish. It is also a carnivorous fish.
Hence, herbivorous carps are Labeo and Hilsa.
So, the correct answer is 'Labeo and Hilsa'.