Would stocking predator fish with schooling fish and other semi agressive/not so aggressive fish be okay to do if the tank is big enough? Because in nature all of these things are present anyway. I know we try to choose our fish wisely in how they will cooperate with others, but would an aggresive fish litterally chase a smaller fish around constantly and continously until it caught it? My bichirs always try and eat my ghost shrimp but the shrimp are too fast and everytime it lunges at one it misses. The shrimp dont seem stressed out neither does the bichir, its more like a "until next time mr shrimp" type thing it seems. I just cant see an aggressive fish literally chasing a school of fish non stop like a mad man (or fish), but is it to be understood that it will? Even if all fish are fed regularly and there are enough obsticles in the tank to shorten up the fishes attention span? I realize i could be wrong i just wanted to hear some of your opinions.