Hello everyone! First I would like to say I am not really a "beginner" in fish keeping, but I didn't really know where else to place this thread. I apologize to staff if this thread needs to be moved elsewhere. Now, to the topic of discussion. It turns out not all is going well in my 55 gallon community tank. Recently I added a gold gourami to my mix of a male betta, ember tetras, cardinal tetras, and a 6 inch common pleco. All was going well, or so I thought, until this morning, when I noticed two cardinals missing. I scoured the tank for a solid fifteen minutes, still unable to find the missing fish. I figured they were just hiding well. Well I went back to the tank a few minutes ago and found a cardinal floating dead on the top of the water, torn up and definitely looking like somebody took a bite at it. Of course I now know the culprit must be the gourami, who is the only fish large enough to take a bite out of a tetra, and she had been showing a mild interest in them lately as well. As much as I love the pretty girl, she has also been scaring my poor little betta into hiding. I'm thinking that it's time to move her. Now the question is, what do I do? The only other tank I have available is a 20 gallon high, which is too small for her. Do most fish stores except returns? I hate to give her back up to the store, but I don't know of anyone who would be willing to take her.