Is there anything wrong with this combination?
1. angelfish
2. Corydoras
3. Rainbow Shark
4. goldfish
5. Penguin fish
5.Emperor tetra
6. Congo Tetra
7. Female bettas

if you ask me, the only thing oddis a coldwaterfish, the goldfish in that list.
The rest should be compatible, as long as the angelfish has no fin nipping tendencies.
And penguin fish still had to be googled...

edit;No prob with the penguin either!

What do u mean googled?

i meant i didn't know the fish, but now i do, after i googled it.
and edited the first post.

I agree with Noddy 100%! No goldfish!

Just be careful of the rainbow shark sometimes they can become aggresive. before i had an oscar i had a community tank with a rainbow shark in it which picked on my silver shark(bala shark) which was about 4" and the rainbow shark was only 2"

Ditch the goldfish

cories need to be in groups - so make sure you don't get just one

Here are the fishes for the community tank:
1. 4 female bettas
2. 1angelfish
3. 1 rainbow shark
4. 2 corydoras
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Tell me
1. what barbs can i combine
2. What tetras can i combine
3.what rainbow fish can i combine
4. what Cypriniformes can i combine
5. what invertebrates can i combine
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Criteria
1. Of course, they don't kill each other.
2. Less than 10 inches long
3.Doesn't kill plants
4. Not a wrecker ofv equipment unlike Astronotus ocellatus etc.

imo barbs should not be kept in tanks under 5 foot, bigger than 5 is better...
I had ceylon barb but they turned out to kill a lot of other fish.
The puntius barbs i have had are pretty aggressive as well.
Barbs need loads of swimmingspace and if they don't get that they may become very nasty.