aba aba-s are unpridictable time bombs, up untill 15 inches my killer was a pleasent community fish (in with a mess of pikes) but then he just became hostile, this was my second experience with these animals, the first was quite similar as well. pleasent and fun to watch, but then suddenly BOOM, a mutilated fishy, currently my fish measures at just around 25, he eats untill his belly buldges, and suspiciously gets very close to my hand when i clean the tank, yes i'm sure he wants to take a test bite, (i NEVER take my eyes off of him) but heres the catch, for the last 3 months i have a gold gurami in that tank with him, and the aba could care less, for now... so the wide bodied fish thing does resonate with me, but hey you never know, i'm sure eventually the gurami gets eaten, but its a real weird thing, this little gurami foloowing the aba aba around, and tickleing him with those feelers, i think the aba aba enjoys it. anyway in my opinion, in terms of sheer meaness, and cruelty my current 20 inch royal tiger knife is TWICE as nasty, he bites first then asks questions LOL...PS John at eczs talked me in to keeping this rare BEAST.