Why is my fish's back bent?
People also ask, what causes bent spine in fish?
It can be noticed as a curvature in the spine when the fish is viewed from above or the side. A bent spine in guppies is almost always the result of either scoliosis or fish tuberculosis, and it's an untreatable condition that often requires euthanasia of sick fish.
Likewise, people ask, why is my fish deformed?
Deformed spines are usually caused from poor water quality. It would be good for her to have her water tested. Ammonia and nitrItes should be 0 and nitrAtes should be below 40ppm. Vitamin & mineral deficiencies can also cause it.
No guppies need heag at all times. And probably the reason why the guppy's tail is bent is because there is no heat, no filter. And they are in stress due to it.