I have tried to breed guppies, and they all die off, and I am in the process of berrding convicts. The only problem is that since the pbass are young they need to be fed twice a day, thats 4 feeders, and the oscar needs 1 live and the rest staple, so thats 5 I need a day, and with only one spawning of around 25 convicts, that only works for 5 days. The pbass don't want anything that isn't live, but I haven't tried worms yet. The bait shop I get them from is the best around, and one of my friends (who has held fw tanks for 6 years) used the same place and had way less problems than the feeders at petland, where he is now a manager. If minnows don't work, my only chioce is feeders from walmart or petland unless I want to drive over an hour both ways.