Amylase activity in different tissues of three test fish species. Data expressed as mean ± SEM (n = 9) in g of maltose liberated/mg protein/min.Values with different lowercase superscripts (alphabet) differ significantly (p < 0.05) between fishes within tissue and concentration. Values with different numeric superscripts differ significantly (p < 0.05) between concentrations within tissue and fishes. Values with different uppercase superscripts (alphabet)differ significantly (p < 0.05) between tissues within fishes and concentration.