Most tetras will work for your tank size. I like tetras because they have lots of color and shape variation plus they're generally good community tank fish. Rasboras are good too. Guppies, mollys, maybe a couple swordtails. As long as you stick with small fishes and not too many you should be good.
Sent from my SM-G950U using Tapatalk
Sent from my SM-G950U using Tapatalk