Nope, I couldn't translate their language either. I think they probably communicate in like, subtle branch movements or something?

[ He wiggles a hand, as if that means something. Well, they only got the Cotati to move thanks to Groot, so he can only guess. ]

They live on this planet called Lamentis. It's actually a really beautiful place. Really peaceful. I guess the Cotati believe in peace, so maybe they probably think people are stupid for fighting all the time.

[ He shrugs. It's a little more exposition that he might give usually, but he knows how much Fushi likes to learn stuff, so he's happy to exposit. ]

Huh. That's cool. What was being a fish like? Is it true you don't realize you're underwater?

[ That's what people say, right? Fish don't know they're underwater, because for them it's as normal as breathing? ]