Must be ummmm... "interesting" when you have to clean the tank LOL LOL LOL.
I had a large adult Oscar that bit me once when i was scrubbing the glass, clamped on so hard that when i yanked my hand out (howling like crazy in shock) the O was still hanging on my finger and ended up on the carpet LOL. Made my knuckle bleed a little too, like cat scratches (little half circle tooth marks , thats how far in its mouth my knuckle was LOL) Shocking.