Enables estradiol 17-beta-dehydrogenase activity and testosterone dehydrogenase (NAD+) activity. Acts upstream of or within androgen metabolic process and estrogen metabolic process. Located in mitochondrial envelope and plasma membrane. Is expressed in several structures, including brain; genitourinary system; heart; hemolymphoid system gland; and liver. Orthologous to human HSD17B8 (hydroxysteroid 17-beta dehydrogenase 8). [provided by Alliance of Genome Resources, Apr 2022]