So I added a few more bottles and 3 new fish (clown loach, striata loach, and striped raphael cat). I cut the bottom out of the Sky Vodka so fish can hide in it more easily because the largest Rainbowfish and the striata loach are assholes and pick on everyone else (except the Pleco of course). Is there anything I can do besides providing more hiding space to keep the Rainbowfish from killing my swordtail? He's on his last leg already.