HomeFreshwater aquarium fishPuffers, gobies & brackish fishFresh water puffer fish Fresh water puffer fish (Tetraodon mbu) Scientific name: Tetraodon mbu Boulenger, 1899 The Fresh water puffer fish (Tetraodon mbu) is a freshwater fish of the family Tetraodontidae that grows to about 67 cm (26 in). In the aquarium it needs a tank of at least 1,515 L (400 US gal), water at 24–26°C (75–79°F) and a pH of 7.5–8.3. Native range: Africa, Congo Basin and Lake Tanganyika. Fresh water puffer fish care at a glanceCommunity tankNot suitableAdult size67 cm (26 in)Minimum tank1,515 L (400 US gal)Temperature24–26°C (75–79°F)pH7.5–8.3Hardness5–15 dGH (89–268 ppm) BiologyInhabits large rivers and lakes. Also occurs in estuaries.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTetraodon mbuFamilyTetraodontidae (Puffers)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length67.0EnvironmentFreshwater; brackish; demersalClimateTropicalDistributionAfrica: widely distributed in Lake Tanganyika and the Congo basin.Conservation status (IUCN)Least Concern (LC)Threat to humansPoisonous to eatUsesFisheries: of no interest; aquarium: potentialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More puffers, gobies & brackish fishTetraodon schoutedeniIndian glassy fishParambassis rangaAtlantic mudskipperPeriophthalmus barbarusPeacock gudgeonTateurndina ocellicaudaNorthern trout gudgeonMogurnda mogurndaStigmatogobius sadanundioSee all puffers, gobies & brackish fish Can it live with...?Fresh water puffer fish and Atlantic mudskipperFresh water puffer fish and Green pufferfishFresh water puffer fish and Indian glassy fishFresh water puffer fish and Northern trout gudgeonFresh water puffer fish and Peacock gudgeon SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026