sera guide - Healthy aquarium fish

3 Deficiency diseases and malnutrition Cause: Mineral and vitamin deficiency caused by too soft water and unsuitable food low in vitamins Treatment: page 38 Observation Deformation of gill lids, fins and spine in off- spring. Discus with fin deformation caused by mineral deficiency Gill lid deformation Cause: Poor quality, monotonous food leading to liver fattening, among others Treatment: page 38 Observation Listlessness, too thin or too thick animals, poor development. Fatty liver degeneration 21