Enables metalloendopeptidase activity. Involved in several processes, including diet induced thermogenesis; energy homeostasis; and protein processing. Acts upstream of or within cristae formation. Located in mitochondrial inner membrane. Is expressed in alimentary system; liver lobe; and nose. Orthologous to human OMA1 (OMA1 zinc metallopeptidase). [provided by Alliance of Genome Resources, Apr 2022]