Cover photo by M. Douglas. Find the Whistling Rain Frog in the FBIS database (Freshwater Biodiversity Information System) here. Family Brevicepitidae Identification Male Whistling Rain Frogs range from 22–26.2 mm (N = 14) in body length. Morphologically, the species is difficult to separate from B. mossambicus and B. bagginsi. The Whistling Rain Frog can be easily distinguished from all Breviceps species by its unique advertisement call. … Continue reading Whistling Rain Frog (Breviceps sopranus)