10-21-2011, 11:40 AM
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I don't think angelfish would be a good fit. I mean, perhaps a breeding pair in a 29g, at most with only a few substrate fish, but not with what you have. Angelfish need to be either in a mated pair, or a group. And this doesn't even take into consideration that they wouldn't mix well with your gourami and danios.
Before you look at any new kinds of fish, I would adjust the numbers of fish you already have. The cory cats, the danios, and the neons all need to be in larger groups. I would aim for at least 6 of each kind, but the more the merrier (space permitting).
After you have suitable numbers of the other fish, then you could post your water parameters and all the helpful people here could help you decide if you have room for more fish/what fish would work with what you have.
Kudos to you for asking questions about compatibility and researching before you got more fish! That's awesome!