Xeneichthys is an extinct genus of teleost fish from the Albian El Doctor Formation in Hidalgo, Mexico.

The type and only species is X. yanesi is known from multiple specimens, representing the entire body.

The average length of the species is 17cm, however some sampled individuals reached up to 20cm [1] The generic name, Xeneichthys.

The specific epithet, yanesi, honors the Yáñez family, who work at the quarry the specimens were found in.

This article about a prehistoric ray-finned fish is a stub.