Biomphalaria alexandrina is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.

This species occur in Egypt Biomphalaria alexandrina lives in freshwater, for example in irrigation canals.

In captivity, Biomphalaria alexandrina can be fed on boiled leaves of lettuce.

[1] Biomphalaria alexandrina serves as an intermediate host for Schistosoma mansoni There is a known hybrid Biomphalaria glabrata × Biomphalaria alexandrina, from Egypt.

[2] A cladogram showing phylogenic relations of species in the genus Biomphalaria:[3] Biomphalaria stanleyi Biomphalaria pfeifferi Biomphalaria camerunensis Biomphalaria sudanica Biomphalaria choanomphala Biomphalaria alexandrina Biomphalaria smithi Biomphalaria glabrata Biomphalaria kuhniana Biomphalaria straminea Biomphalaria straminea Biomphalaria intermedia Biomphalaria amazonica Biomphalaria sp.