You previously told me that newts and humans are fish, in some sense, so I feel like you know where I'm coming from even if I can't explain it right!<quoted text>
Instead of constantly asking stupid questions and getting answers that you do not understand why not try to learn a bit about biology? If you are willing to watch a few videos I am sure that we could recommend some so that you could figure out the answers to these questions yourself.
Isn't that what you really want anyway?
I'm willing to watch a video that explains what makes us choose to call one animal a fish but not the next. It just seems random and badly defined :-(