Question

which type of fishes are available in olden days?​

Answer 1

HEY MATE,

Answer:

The first fish lineages belong to the Agnatha, or jawless fish. Early examples include Haikouichthys. During the late Cambrian, eel-like jawless fish called the conodonts, and small mostly armoured fish known as ostracoderms, first appeared.

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Answer 2

the first fish lineages belong to agnatha, or jawless fish. early examples include Haikouichthys. During the late Cambrian, eel-like jawless fish called the conodonts, and small mostly armoured fish known as ostracodsems, first appeared.