The devil fish is larger than its close relative the lesser devil ray. The average lifespan of a giant devil ray is 20 years. Fishing, transportation, landing, and trade of the giant devil ray is forbidden in Albania. Munk's devil ray is found in tropical oceanic and coastal waters. Like other closely related species, the bentfin devil ray feeds on plankton. The bentfin devil ray can reach a disc width of and weigh about . The giant devil ray is also protected under the Bern and Barcelona conventions. Munk's devil ray is ovoviparous, but little is known about its reproductive habits. The shortfin devil ray feeds on plankton and possibly also on small fish and squid. The lesser devil ray ("Mobula hypostoma") is a ray in the family "Mobulidae". The shortfin devil ray ("Mobula kuhlii") is a species of ray in the family "Mobulidae".