I can only suggest 2 for you. First are guppies, but make sure to get all male one because they will breed really fast.i'm doing a 10 gallon no filter tank ( where i use the plants to filter the tank) with a lot of fast growing stem plants grown both submersed and immersed. any ideas for what fish i add and how many. i want some brightly colored fish to contrast with the green plants (as i'm putting the tank in iaplc 2021)
thanks a lot!
Second are tetras,this guys are really nice to look at specially when they swim unison.
Or you can mix the two together.