Forum:If any fishman could join the crew, what kind do you think it would be?

I was thinking first that is should be a girl.I thought about how a billfish would be a cool fishman. But if she joined the crew, then there would 3 swordsmen so nevermind. A mermaid is only good for swimming fast in water so that knocks a mermaid out. Maybe a fire sea urchin so she could have something like claws and be able to inject venom into people, She could also be about to expel heat from her body but not breath fire. Thats Franky's thing. A stonefish is another cool idea. I thought of this randomly watching the new episode last night. Does anyone else have any cool ideas?