What are 'ancient' and 'prehistoric' fish that are still alive today?

[Pyluper]

As the title said, all I know are arowana, arapaima, aba aba knife fish, electric eels, tarpons, all true gars, lungfish, clown knife fish and that's all I know. If there are more ancient or prehistoric monster fish, please let me know.

 

[tlindsey]

As the title said, all I know are arowana, arapaima, aba aba knife fish, electric eels, tarpons, all true gars, lungfish, clown knife fish and that's all I know. If there are more ancient or prehistoric monster fish, please let me know.

The Coelacanth.

 

[Pyluper]

The Coelacanth.

Can't believe I forgot sturgeons and paddlefish.

 

[Pyluper]

The Coelacanth.

Oops, I forgot to mention only freshwater. But now that you mentioned coelacanth, I do wonder if anyone has ever attempted to keep them?

 

[tlindsey]

Don't forget about the Bowfin.

 

[Pyluper]

Don't forget about the Bowfin.

I wished I had one, they look fascinating. They're pretty rare here.