Back with more poly problems! I've had my albino bichir for about 7 months now and I just noticed his spine is bent. This appears to be impairing his swimming, he seems almost wobbly. I'm extra worried because I mixed up my quarantine tank buckets with my main tank buckets and a new poly in quarantine seems to have the same swimming problem (but a straight body) and seems much more sick. My albino in the main tank has a good appetite still and the only symptoms are slightly heavy breathing, bent body and "awkward" swimming. I have attached a photo of him.
Anyone have any ideas about what this could be?