Oncaea is a genus of copepods.

The genus contains bioluminescent species.

[2] Unlike other bioluminescent copepods, Oncaea have an internal (non-secreted) bioluminescence.

[3] Oncaea contains the following species:[1] A number of nomina dubia and species inquirendae have also been described in Oncaea:[1]

This copepod-related article is a stub.