Nothobranchius Kwalensis (Nothobranchius kwalensis), first described by Costa, 2019 is a tiny fish in the family Nothobranchiidae (order Cyprinodontiformes). Adults typically reach 4.20 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Endangered.
Dorsal spines (total): 0; Dorsal soft rays (total): 14 - 16; Anal spines: 0; Anal soft rays: 16 - 18. Diagnosis: Nothobranchius kwalensis is distinguished from all other congeners of the N. melanospilus complex by the combination of the following morphological character states: lower jaw not anteriorly projecting beyond upper jaw vs. anteriorly projecting in N. prognathus; dorsal-fin origin anterior to anal fin origin in females vs. posterior in both sexes in N. melanospilus; pelvic fins medially in contact vs. bases medially united in males of N. prognathus; presence of two longitudinal series of scales on frontal region vs. three in N. prognathus; anterior supraorbital series of neuromasts divided in two sections vs. arranged in a single continuous row in N. melanospilus; mandibular neuromasts 14-16 vs. 17-21 in N. melanospilus; in females, few rounded black dots on anterior portion of flank vs. dots absent on anterior portion of flank in N. melanospilus; body depth 28.7-30.9% of standard length in males, 25.8% of standard length in female, vs. 32.7-35.5% and 32.1-33.4% of standard length respectively in N. prognathus; dorsal-fin base length 24.1-27.3% of standard length in males vs. 27.9-29.9% of standard length in N. prognathus; head depth 79.0-82.9% of head length in males, 69.5% in female, vs. 90.4-99.2% and 85.6-90.3% of head length respectively in N. prognathus; eye diameter 26.8-28.4% of head length in males, 27.1% in female vs. 20.9-25.9% and 21.1-24.4% respectively in N. prognathus . : fusiform / normal; Cross section: compressed.
Behavioural data for Nothobranchius Kwalensis is currently being reviewed.
Freshwater; pelagic. Tropical
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