1. Reason: Small goldfish may bend because they are frightened. Their courage is relatively small, and changes in the outside world can easily scare them. When they are frightened, their bodies will be stimulated.

2, Solution: Breeders need to keep their surroundings quiet to prevent them from being frightened again. After they recover, the bending of the body can be relieved.

1. Reason: Small goldfish's body bending may also be caused by too much change of environment. When their living environment suddenly changes, they will be stimulated and prone to body bending.

2. Solution: Breeders need to keep the water temperature and quality in a stable range, and when they adapt to the new environment, they will not bend again.

1. Reason: Small goldfish may also suffer from curvature, mainly because the high content of heavy metals in water stimulates the nerves of small goldfish and leads to muscle contraction. In addition, when small goldfish lack calcium, it is also easy to have curvature.

2. Solution: Breeders need to change their water immediately to keep the water clean. If conditions permit, you can splash copper sulfate solution in the fish tank once a day. They should also be fed more foods with high calcium content to ensure their adequate nutrition. You can also add some quicklime to soybean milk, which can quickly supplement calcium.