“…VA deficiency can lead to photophobia, exophthalmos, cataract, retinal degeneration, growth delay, fin hemorrhage, lack of pelvic fins, skeletal deformities and even increased mortality (Hu et al, 2006, Moren et al, 2004, Hemre et al, 2004, Mazurais et al, 2009, Yang et al, 2008. Whereas when feeding too much VA, fish also would show growth retardation, increased mortality, vertebral deformities and fin necrosis phenomenon (Dedi et al, 1995, Takeuchi et al, 1998, Mohamed et a1., 2003.…”