Because fish is edible, even the dangerous ones. Or at least, they'd become edible in the right hands.

[He just...takes a deep breath, reminding himself that the kid's only 15 or so.]

An 'estate', in this case, is just a fancy-ass term for having a small yet well-off farm. It's normally for rich people who can afford the help, but we actually do all the work ourselves instead.

And yeah, we have our own chocobos. Or rather, the others do. I just happen to help take care of them when I'm home.