Oh! That makes sense. The ones I wanted were the American ones, not the African. The only problem I can see with the rainbows is that I can't seem to find those. I'm wondering if I'd have to get a local pet store to special order them, if they can? But I'm not sure I'd trust them not to get the African variety in instead of the ones that are suitable for my tank. The reason I mentioned the jewels was because those seem more available.
I just remeasured my tank and discovered it's actually a 30 gallon breeder. Would that be better for jewels, since it's 6" longer than a 29 gallon? It's the same length as a 40 gallon breeder but without the extra height, I think. Anyway, the measurements are 36"x18"x12". I didn't buy the tank, my dad did and he bought it a pretty long time ago. I had assumed it was a 29 gallon, but I put the dimensions into an online search and it came up as a 30 gallon breeder.
If the extra 6 inches makes a difference and makes the tank more suitable for jewels, I'll probably end up with those just because they seem easier to find than the rainbows, at least where I live. Would the hatchetfish possibly work with the jewels, or are those only with rainbows? I've read that jewels are more aggressive than the rainbows, but I've seen other people say that they really aren't.
Again, I'd be happy with a cichlid only tank, but a little variety would be nice if the I can do it without the fish suffering.