What shrimps and snails you are having?

[Abhi]

Nope its more of a permanent damage and its a gradual process through which you have to do it.
A calcium deposit in the tank will help but concentration should be given more to the calcium intake in the food.

Your one are also having this issue?

The broken back part yes.

[Abhishek]

Check out if they are taking food properly, and their movement is slow compared to other poso,so dont worry about if they are moving slowly.

[Abhi]

Check out if they are taking food properly, and their movement is slow compared to other poso,so dont worry about if they are moving slowly.

Eating algae wagers and catfish chips