HomeFish encyclopediaRay-finned fishesPerch-like fishCichlidsOne-and-a-half-stripe hap One-and-a-half-stripe hap (Protomelas insignis) Scientific name: Protomelas insignis Trewavas, 1935 The One-and-a-half-stripe hap (Protomelas insignis) is a freshwater fish of the family Cichlidae. Native range: Africa, Endemic to the southern part of Lake Malawi. BiologyDorsal spines (total): 17 - 18; Dorsal soft rays (total): 10-11; Anal spines: 3; Anal soft rays: 9 - 10; Vertebrae: 32. Diagnosis: distinguished by the prominence of the posterior part of the mid-lateral and the anterior part of the dorsolateral stripes; further distinguished from P. spilonotus by the lower number of gill rakers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameProtomelas insignisFamilyCichlidae (Cichlids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length20.3EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAfrica: Endemic to the southern part of Lake Malawi.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026