This question sounds strange so I feel weird asking it but anyone ever heard of a fish that was totally normally ending up crooked? Like or V shaped-ish? Kind of like a hunch backed old man, but he's a fish (obviously). A few months ago my fish became crooked, and shortly after that he start having occasional issues swimming where he seemed to have trouble staying on course.
He's old now, and I think he's finally on his last few hours of life... (really sad about that) but I'd still really like to know what happened to him.
http://www.fishdeals.com/fish_diseases/curved_spine/
Fish Tuberculosis (Curved Spine) General Description
The symptoms of Fish TB are usually wasting, lesions on the body, skeletal deformities (a few of mine developed curved spines), and loss of scales and coloration. This is a relentless disease.
Most references actually call this disease Fish TB, but it is not actually TB and it is transmissible to animals other than fish. Fish TB is caused by Mycobacterium marinum, a bacterium closely related to the TB bacteria, Mycobacterium tuberculosis. There are actually over fifty species of bacteria related to tuberculosis that can cause disease. They are typically able to live in any number of environments, in soil, water and animals.
Fish Tuberculosis (Curved Spine) Treatments
Effectively, there is no sensible cure. The only way to cure the infected aquarium is to immediately remove infected fish as soon as they show any symptoms. Ideally all other susceptible fish should also be removed.
Once the fish became emaciated I had no luck saving them. Traditional tricks for curing diseased fish, such as adding salt and raising the temperature, are ineffective and in the case of the raising temperature may even be detrimental. The bacteria grow better in warmer water; their optimum temperature is 30�C. They have no problem with salt either; they can infect saltwater fish as well as freshwater.
I have read cases where treatment of the open wounds with penicillin ointment have effected a cure. As the disease is bacterial, antibiotics should work, but in general these are only available on veterinary prescription and injection of infected fish may be required, so such cures are hardly useful,to the average aquarium keeper.
Fish Tuberculosis (Curved Spine) Prevention
Prevention is key to avoiding this disease since it is so difficult to cure. The immune system is usually enough to prevent an infection in healthy fish. Stress, which suppresses the body's immune system, and/or wounds in fish are most likely to allow an infection to take hold. Therefore, eliminating stress is paramount. Although aquarists don't frequently get this disease, using gloves when cleaning infected tanks is highly recommended. Starting a siphon by mouth is also a good way to expose yourself unnecessarily to the bacteria. If a tank has been infected, it is considered best to bleach it well and dry it out before restocking it.
Bacilli may be in the faeces, scraps of skin or burst abscesses and can be ingested by healthy fish. If infected fish die and are eaten by others (as we have all seen, on occasion, in a poorly attended fish retailer's stock tanks) then an overwhelming infection may result.