Nomorhamphus ebrardtii is a species of viviparous halfbeak, a ray-finned fish in the family Zenarchopteridae, endemic to brackish and freshwater locations in Sulawesi and the neighbouring island of Kabaena in Indonesia.

[5] This is modified in males into an "andropodium", a movable intromittent organ used to deliver milt into the female's genital opening.

The colour of preserved specimens is yellowish and there is a dark blotch at the base of the pectoral fins.

[5] Members of the family Zenarchopteridae show a number of different viviparous breeding strategies.

Nomorhamphus ebrardtii is unusual in that the developing embryos are retained in the oviduct where they receive their nourishment from oophagy and adelphophagy, oophagy being the feeding on unfertilised eggs, while adelphophagy is the feeding on fertilised eggs, developing embryos, and smaller siblings.