Korthaus's killifish

Nothobranchius korthausae reaches about 5 cm. Males display a bright red pattern on a metallic blue background, with yellow fins. Females are brownish and smaller. The body is fusiform, adapted for fast movement in shallow waters. It has a large upturned mouth, typical of surface feeders. This killifish is active and curious, but males are highly territorial. Its reproduction is annual: eggs undergo obligatory diapause. It is considered endangered in its natural habitat.