 At a length of , the placenta has formed; the first teeth, dermal denticles, and skin pigmentation appear on the embryo, and the external gills are much reduced in size.By the time the embryo is long, it resembles a miniature version of the adult.Birthing takes place in May and June off Mumbai and Parangipettai, in March and April in the Gulf of Mannar, and in February and March off northern Australia.