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How old is your angelfish? I know they can get territorial. I had one in a 30gal tank with 2 blue gouramis, 2 white tetra. If your angelfish is older, you might want to be mindful of fish with longer fins, as they could get fin-nipped. If your angel is relatively young, he/she might be okay with neighbors with longer fins. I wouldn't put another angel in with a previously established angel though.
I also keep an angel in a 29 and would be curious about how old/large your fish is. But here are some fish I heard good things about as far as compatibility with angelfish.
Loaches
Cory Catfish
Tetras
Gourami
Rams
Danios
These are only a few and each should be HEAVILY researched before purchase. I learned this the hard way lol.
Sorry I have 8 small rail guppies and 2 aglae eater in the tank now. The biggest guppies is about 1 inch and the aglae eater is about about 1.5 inch. I keep all the the baby guppies giveaway. Thank for the reply. How the weather up in Raleigh? It wonderful here.