diandry

Wrasses also have an uncommon life history strategy, which is termed diandry (literally, two males).

In diandry, a partial hydatidiform mole develops.

Diandry appears to predominate among early miscarriages, while digyny predominates among triploidy that survives into the fetal period.

Triploidy may be the result of either digyny (the extra haploid set is from the mother) or diandry (the extra haploid set is from the father).