Bachea is an extinct genus of ray-finned fish that lived during the Late Cretaceous in what is now central Colombia, South America.

The type species is Bachea huilensis, described in 1997 by María Páramo from the Turonian of Huila, Colombia.

[3] The several specimens found range from 0.5 to 1 metre (20 to 39 in) in length, making Bachea one of the larger forms in their order.

[7][8] These formations were deposited in a relative highstand sequence with an oceanic oxygen depletion event in the seaway present in the Late Cretaceous in northwestern South America.

[9] Other fossil fish found from this period are Pachyrhizodus etayoi also from Turonian Huila,[10] and Candelarhynchus padillai from the San Rafael Formation,[11] which is also rich in ammonite fauna and preserves crustaceans.