Everything I've heared is to NOT put anything with him. I will do another water change soon. Should I use carbon or biomatter in my filter? Should I upgrade my filter because I'm using the one that came with the tank now.
Ok can I wait for maybe a week or so. What other fish could I keep with him? Can I just keep him single with some rummynoses or congo tetras? The only female I saw in there had a small stomach so I don't know if she had a parasite?
It is fairly simple to treat for IPs by soaking the food in anti-parasite meds.
http://www.**************.com/forum/library/hospital/internal-parasites-prevention-and-treatment/
I don't suggest other tank mates for this aggressive species.