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A jawless fish which lays eggs in fresh ...

A jawless fish which lays eggs in fresh water and whose ammocoete larve after metamorphosis return to ocean is

A

Entatretus

B

Myxine

C

Neomyxime

D

Petromyzon

Text Solution

Verified by Experts

The correct Answer is:
D
Petromyzon (lamprey) is jawless fish belonging to class Cyclostomata which lays eggs in freshwate. For brccding these fishes migrate from marine to freshwater rivers and streams. After breeding external fetilisation and indirect development with a prolonged larval stage, the ammocete larvae after metamorphosis returen to ocean.
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