I have a 29g with (1) 3" zebra pleco, and (4) 1.5"-2" angels. the temp is 81F, ph is 7.4-7.6. it has all plastic plants, but a lot of rocky hiding places. I am looking to add some fish to the tank, but don't know what. I also have a 20g with similar parameters and a 3.5" rainbow shark, 3.5" pictus cat and 2 zebra danios. i used to have all these together but it was obviously too much. i am willing to move the rainbow shark or pictus cat over to the angels and add to that tank instead, but still need some ideas. Any suggestions would be appreciated.