the four corners. Males and females reach sexual maturity at and long respectively. Human interactions Significant, though unquantified, numbers of southern sawtail catsharks are caught incidentally on bottom longlines and in bottom trawls and traps, deployed by goosefish and squid fisheries. Given its very limited range, its population may be threatened by increasing levels of squid fishing activity. The International Union for Conservation of Nature (IUCN) has therefore assessed this species as Vulnerable. References southern sawtail catshark Endemic fauna of Brazil Fish of Brazil Southeastern South American coastal fauna Vulnerable fish Vulnerable biota of South America southern sawtail catshark