Inositol is vital for hair growth. It enhances the nervous system and the fat transportation within body. Inositol also has a sedative effect. Some fish species are incapable of absorbing inositol sufficiently to sustain their metabolism and require supplementations in their diets. Deficiency of inositol in fish results in poor growth, appetite loss, fin erosion, dark skin coloration, slow gastric emptying and lipotropic.