01-14-2010, 03:07 PM
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Kribs are from Africa but they're a riverine fish, not a rift lake fish. This means they're well suited for community tanks and general sort of tropical forest stream sorts of setups. If you do try another type of cichlid, you're better off with American species than African rift lake fish (there are other riverine African cichlids but the most commonly available other species, the jewel cichlid, is a mean fish that would probably kill your krib). That said, since your fish is several years old and is laying eggs, adding any other cichlid might not be the best of ideas as it might result in your female attacking it.
The first thing that jumps out at me is that your neon would be better off in a school. Apart from that, pretty much any other peaceful schooling tetra or barb that would fit in your tank would be a good choice. Livebearers like swordtails and platies also work well, as do danios, rasboras, and smaller rainbowfish. Basically, you've got a lot of choices!