Hello! I am concerned about my 1 female rainbow cichlid. she seems to have 1 side of her abdomen swollen. The other side seems to be fine. she does not seem to be sick, she seems to be swimming fine and eating normally. although I havent seen her poop in a while. she does not seem to be very recluse or hiding, and in fact, she's been more aggressive unusual.This has been going on for about a week or more and I'm not sure if this is an illness or maybe just constipation. Any advice would be greatly appreciated.