Four hundred snails (400), two hundred (200) each of Lymnaea acuminata and Bellamya dissimilis with weight ranging from (0.40gm to 1.15 gm and 0.81gm to 4.23gm)respectively. Data was collected to evaluate phenotypic correlation and multiple regression equation analysis. The snails Lymnaea acuminata and Bellamya dissimilis shell width, aperture length, aperture width and total body weight were the parameters predict the animal shell length. The mean recorded animal shell length(ASL), animal shell width(ASW), aperture length(APL), aperture width(APW), and total body weight (TBW)was (2.108±0.29096cm, 2.82±0.50812cm, 1.285± 0.17700cm, 0.6895 ±0.14049cm, 0.53675± 0.19704cm and 3.157±0.36868, 4.721±2.9761, 1.225±0.15619, 1.00935±0.70899, 2.03935±0.64611) for Lymnaea acuminata and Bellamya dissimilis. The result showed correlation among morphmetric traits which indicated highly positive significant at (P<0.01%) for Lymnaea acuminata and for Bellamya dissimilis some parameters are highly significant and some are negatively significant (P<0.01%). All morphmetric parameters were best predicted animal shell length of Lymnaea acuminata and Bellamya dissimilis [r2 =68.5%, r2 =62.8%] respectively.
