Question

Which of the following is the migratory fish?
A. Shark
B. Salmon
C. Carp
D. Ribbon fish

Answer 1

Hint:- Migration of fish are normally done by anadromous fishes which migrate from fresh water to sea water. They generally migrate with the reason for spawning. Some fish migrate regularly while some fish migrate annually it is generally based and classified on the use of biomes.

Complete answer: Salmon is anadromous which mostly grow in saltwater but migrate to freshwater for the purpose of spawning. Anadromous salmon are northern hemisphere fish that spend their ocean phase either in the Atlantic ocean or Pacific Ocean. Whereas sharks belong to the group of Elasmobranchii and are characterized by cartilaginous endoskeleton, carp is an oily freshwater fish, ribbon fish is a large head fish having ribbon like appearance these fishes do not migrate as they are not anadromous and need no change of environment for spawning and migration. Hence the correct option is (B) Salmon.
Its life cycle begins and if they survive to the maturity they migrate to freshwater in the upper stream to lay their eggs. They have the unique capability of remembering the exact place of their birth. After 6 to 8 months their eggs hatch into tiny larvae generally called sac fry. The salmons negotiate waterfalls and rapids by leaping or jumping they usually make vertical jumps to negotiate.

Note:- It is to be noted that once the salmon have spawned most of them deteriorate rapidly and die. The pacific salmon can live for many years before swimming to the fresh water where they were born, for spawning and of course then dying. They are normally semelparous (spawn once in a lifetime).