yep handfeeding, and turn the light off or use a dimmer light. my fish get indirect light but I rarely turn the tanks light actually on. It goes on and my 3 dive for cover. otherwise they are flitting around constantly, and get rather boisterous whenever i enter the room. They are at a point now they will start attacking each other when I walk in, and settle down once they realize there is no food forth coming. bad habit i need to break them of. My Oscar also leaves them alone as long as the light is off, but when it goes on he'll go after them. so depending what else is in the tank it may be an aggression issue as well.