 A slow @-@ moving predator feeding mainly on bony fishes , the sicklefin lemon shark seldom travels long distances and many individuals can be found year @-@ round at certain locations . Like other members of its family , this species is viviparous , with females giving birth to no more than 13 pups every other year , following a gestation period of 10 – 11 months . Although they are potentially dangerous to humans and known to respond vigorously to any provocation , under normal circumstances , sicklefin lemon sharks are cautious and tend to retreat if approached . The IUCN has assessed this species as Vulnerable ; its low reproductive productivity and rate of movement limits the capacity of depleted stocks to recover . Off India and Southeast Asia , this species has been severely depleted or extirpated by unregulated exploitation for its meat , fins , and liver oil . 
