River snapper
Lutjanus argentimaculatus
Mangrove red snapper, Rock salmon, Mangrove snapper

As per the Responsible Angler Guidelines, responsible recreational fishers are requested to not retain but rather tag and release any species caught that are listed as Endangered, Threatened or Vulnerable on a local species list (E.g. National Biodiversity Assessment) or an international list (E.g. The IUCN Red List of Threatened Species).
River snappers (Lutjanus argentimaculatus ) are migratory fish found in estuaries and tropical waters off KwaZulu-Natal. River snappers were listed as Data Deficient in the 2018 National Biodiversity Assessment. This species is rated as a no-sale species within South Africa, only recreational fishers with a permit may catch them following a daily bag (5 pp/pd) and a minimum size (40 cm) limits. Recreational fishers are not allowed to sell their catches.