Cathorops multiradiatus, the box sea catfish, is a species of catfish in the family Ariidae.

It is a tropical, marine catfish which occurs in Guatemala, Costa Rica, El Salvador, Colombia, Peru, Ecuador, Mexico, Nicaragua, Honduras, and Panama.

It dwells at a maximum depth of 20 m (66 ft).

[2] Due to its wide distribution and population density, as well as a lack of major threats or perceived decline in population, the IUCN redlist lists the box sea catfish as Least Concern.

[3] It is commercially marketed both fresh and frozen.