The fish in my tank don't seem to be growing. All of my fish are only about an inch long (swordtails get up to 4 right?) I have hand them for about 4 months and they aren't getting any bigger. I have mostly fed them flake food, but have started to feed them a little more freeze dried food. The cory's are young so I don't expect them to be big. Is it genes, me, or how they were raised before I got them? I also have tried to raise swordtail fry in a net breeder but after a month they are only about a quarter of an inch long. I thought that they would grow faster. I have fed them Pulverized freeze dried blood worms and flake food. I think the fry could be because of lack of live foods. Any ideas?