Other contemporary studies on the genetics of Scylla were either not able to separate
all four species satisfactorily or only examined limited species from the genus.
In Viet Nam, electrophoresis and morphometrics have been utilized to identify
the key commercial species in the Mekong Delta as S. olivacea (“red crab”) and
S. paramamosain (“green crab”), based on the recent revision of the genus.