Low calcium and phosphorus ratios in bones that lead to fragile bones.
It is caused by feeding your fish concentrated dry foods and by excess of vitamins which results from using an incorrect dosage. B and C group vitamins quickly leave the body, fat-soluble vitamins A, D, E - slowly. If the incorrect dose if given, it can cause poisoning - hypervitaminosis.
How to cure:
Fish’s foods should contain substances necessary for normal growth, development, and functioning of all organs and systems.
Fish should be given a balanced diet. Add vitamins to the feed following instructions. Provide fish with live foods: Tubifex, bloodworm, Corehra, Daphnia, Cyclop, Amphipoda, and raw liver. Once a week, at the end of the fasting day give vegetable foods: Wollfia, water fern, scaled salad, and dandelion.