07-15-2010, 04:30 AM
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Welcome to TFK!
I think you might run into problems with that sort of stocking list. Peacock cichlids are African rift lake cichlids that prefer to be in very hard, alkaline water. Kribensis are also cichlids from Africa, but they're from the Congo basin and prefer softer, more acidic water. The dwarf frogs and cardinal tetras also prefer this type of water, but they may not be able to cohabitate with more aggressive, predatory fish like your cichlids. Do you know the sex of your kribensis? How old are they? How big is your tank? I ask these questions because, as time goes on, one of two things will happen: 1) if they're the opposite sex, they'll pair up, start to breed and get very aggressive or 2) if they're the same sex, they won't really get along and will need lots of space and decor to form territories as they mature.
It might be possible to keep the dwarf frogs with the kribensis in a softwater tank, but I would set up a second tank for the peacock. Do you know your pH and hardness? If your water is very hard and alkaline, it suits the peacock but not the others, if it's soft and acidic you would probably need to make the water more suited to the peacock but whatever the case may be, I wouldn't try to keep these fish all in one tank.