03-13-2009, 08:27 PM
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You are going to ha ve to come up with some way of disposing of the fry. If you have a local fish store that will sell them on consignment, good for you, but you will quickly saturate the market. So sooner or later it is going to come down to getting some predatory fish to feed your culls to or simply culling and killing them. I know one guy who just nets a bunch out whenever his tank is overcrowded and buries them where he plants tomatoes. He's got really nnice tomatoes.
Remember, from whence convicts come, there are a bunch of predatory cichlids, including some real monsters like Parachromis dovii (wolf cichlids). The convicts nest in shallow enough water that the fully grown doviis can't get to them, but the larger dovii fry are constantly picking off convict fry, and out of the hundreds of eggs, maybe 2 or 3 fry reach maturity. So unless you cut own on the fry someway, your convicts will take over your tank, kill anything else in there with them, and eventually drown in their own filth.
Culling is deeply unpleasant, but if you are going to keep breeding fish, it becomes your responsibility.