u/RatBlender

I saw one at my LFS and immediately fell in love. I want to make sure I have everything I need before I get one, though. I read online that they needed a 10-20 gallon? I have a ton of plants ready, and some snails as well. I don't plan on adding any other fish into the tank immediately with the gourami, but is there a species they get along with?

Any advice in general would be helpful, I wanna be fully prepared.