Has anyone ever bought any fish from them? If so how legit are they? They only accept paypal and I'm not sure if its 100% legit that I will get my items. Can someone give me some advice?

I have never bought fish from them.

I am not into buying live animals off of the internet. <_<

But, maybe someone else knows something about these people.

My wife and I have bought some very pretty bettas from liveaquaria.com. I've never tried aquariumfish.net, though.

I've only bought from Aquabid.com, but that's like ebay, so you might have a dirt bag seller, or might not. The seller "Rainbowfish" is VERY good. It might be rainbowfishstore? Anyway, yes, I was very pleased with them.