Hi, everyone! I have 2 ACFs that are currently being housed in a 20gal, and a Ryukin goldfish that's in a 10gal hospital tank (only temporary). I'd like to get a 55gal for my goldfish, so I can add several more and some dojo loaches, but my family is concerned about the water and electric bills with another large tank. To help negate the costs, I wondered if it would be possible to put the ACFs with the goldfish because they have similar temperature requirements. I know it's a bad idea in smaller tanks, but would it be doable in a 55gal with 2 ACFs and at least 2 goldfish? (I have one right now but I'd like to get him a friend). I'd also like to add some dojo loaches, but I could live without them. In summary: ACFs with goldfish in a 55?