Hopefully you mean 20L as in 20 gallon long and not liter. If its a 20 liter I would rehome them all and look more for nano fish. If it is a 20 gallon long then I would just do as I said above and keep the water as clean as possible and monitor him for any nipping from the others and if that happens you may need to remove him. Good luck!Nikao said:Good morning
There are 11, and they are in a 20L
I will make sure to do frequent WCs.
Pic to follow later on
I knew it was melting, but I didn’t know it would mess with water quality...Thank You!!!Candace said:Not related to the posted question as I have no experience with green tiger barbs. I noticed in your tank the plant to the right in the picture looks to have a lot of dead leaves. They can break down and compromise the water quality. I would trI'm or pull off anything brown on that plant.