The Tiger Catshark (Halaelurus natalensis) is a discarded bycatch of demersal trawl, longline, beach seine, gillnet, and squid fisheries, and is not known to be utilized or traded. Trend analysis of research trawl data in South African commercially fished areas estimated a population reduction of 67% over three generation lengths (45 years), with the highest probability of 50–79% reduction over three generation lengths. This reduction is driven partly by a steep decline in catches during the early 1990s when fishing pressure in South Africa was substantially higher. Climate change likely contributed to a range shift away from the research trawl grounds that may account for some of the estimated population reduction but that also likely represents a significant loss of habitat for the Tiger Catshark. Overall, due to an estimated population reduction over most of its range and a substantial reduction in fishing effort in South Africa, combined with a suspected range shift due to climate change that could account for some of the estimated reduction but also likely represents a decline in area of occupancy, it is suspected that the Tiger Catshark has undergone a population reduction of 30–49% over the past three generation lengths (45 years), and it is assessed as VULNERABLE.