JoeR
Masterpiece
I actually haven’t set it up yet, it’s only in the planning stages as of yet. It’s a huge undertaking that requires a lot of thought to prevent mold, fungus, health of plants and fish, etc.I'm sure they can, but I've never worried about it. They're surprisingly gentle, and most they'd do to humans is taste your hand or something. And their lifespan is a bummer, but it's fun to watch them grow and develop quickly.
And if you do include them in a paludarium, I'd limit it to just the one you said. Add more than one and they may eat each other! (unless they're ghost mantises- I believe they may live communally, and look cool too)