A jawless fish which lay eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is
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Petromyzon is one of the fish which is a member of class cyclostomata
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Answer:
A jawless fish which lay ‘eggs in fresh water’ and whose ‘ammocoete larva’ after metamorphosis return to the ‘ocean’ is Petromyzon.
Explanation:
It belongs to the Agnatha section and under the subphylum of the Vertebrata. It has specific eel like body but the skeletons of the petromyzon or sea lamprey is made up of cartilages rather than bone.
They have long, brown colour scale less body with jawless mouth. They are used to lay eggs in the freshwater but their larvae return to the ocean after the metamorphosis.
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