The Odontomachus rixosus ant is a polygynous species with a colony size of up to 300 workers. They have a medium development rate and the queen measures 11-13 mm while workers measure 10-12 mm. They have a slightly red head and a brown body. They feed on food insects such as cockroaches and crickets, as well as sweet fruit. They require a humidity level of 60-70% in the arena and 60-80% in the nest. The optimal temperature for this species is not mentioned.