08-24-2007, 04:27 PM
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In a 20g, a Dwarf Gourami
would be fine, maybe two if depending on how much other stuff you have (plants, caves, ...). If you want to do a cichlid, the dwarf cichlids out of south America would be better. I dont know if I would do a breeding pair as the tank is only 20g (even dwarf cichlids are pretty agressive during spawning). You're probably better off with a Ram. I'm kind of partial to German Blue Rams, but also have Gold. Bolivians are nce but might get large enough to cause problems with smaller tetras.
With the cories, I would recommend a lot of caves and such.