So I recently adopted a 20 gallon tank. When I got the tank it was about half full with one obscure fish in it. After getting the tank home and deciding to do maintenance I discovered it was so absolutely filthy that the entire tank needed to be drained and the substrate replaced. Now I have the obscure fish (some sort of gourami) in a significantly cleaner tank. I guess my question is can you help me identify this fish? I'm worried he might be too big for my tank
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