HomeFish encyclopediaLobe-finned fishesSouth American and African LungfishesAfrican lungfishesSouthern lungfish Southern lungfish (Protopterus annectens brieni) Scientific name: Protopterus annectens brieni Poll, 1961 The Southern lungfish (Protopterus annectens brieni) is a freshwater fish of the family Protopteridae. BiologyDorsal spines (total): 0; Anal spines: 0. Diagnosis: distance snout to origin of dorsal fin 2-2.4 times head length, or 54-62% distance snout to vent.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameProtopterus annectens brieniFamilyProtopteridae (African lungfishes)OrderLepidosireniformes (South American and African Lungfishes)ClassSarcopterygii (Lobe-finned fishes)Maximum length90.0EnvironmentFreshwater; demersalClimateTropicalDistributionAfrica: Upper Congo River (Luapula), middle and lower Zambezi basin and all east coast rivers south to the Limpopo River; Lake Rukwa. Has been translocated to additional sites in the Kruger National Park in South Africa. Reports from Upper Cubango and Okavango system need confirmation; not present in this region according to.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: subsistence fisheriesResilienceVery Low, minimum population doubling time more than 14 years (Assuming tmax > 30) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026