It will work! Just make caves/hiding spots and put some plants in there. I have a pair of cubans in my 180g sa/ca community tank along with a pair of festae, they have there own corners of the tank, my other fish cruz along with them, little chasing but nothing serious, no sores or ripped fins! I guess my pairs are mild compared to some others here on MFK. Just try it, it's worth a try! Good luck