Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cyprinodontiformes
(Rivulines, killifishes and live bearers) > Nothobranchiidae
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); geminus: From the Latin geminus meaning twin or double, in reference to the reflective silver spots in the upper part of the iris appearing as twin stars.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.2 cm SL male/unsexed; (Ref. 42930); 3.0 cm SL (female)
Morphology | Morphometrics
soft rays: 17 - 21. Preopercular series with 6 large neuromasts; male with orange-red spot pattern in dorsal and anal fins; caudal fin orange-red; female with spotted head, body and unpaired fins (Ref. 42930).
Found usually at the surface of pools preying on small food items (e.g. small insects) that fall on the water surface. These pools from which the species were collected are ephemeral and usually dry up seasonally (Ref. 42930).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Wildekamp, R.H., B.R. Watters and I.F.N. Sainthouse, 2002. Two new species of the genus Nothobranchius (Cyprinodontiformes: Aplocheilidae) from the Kilombero River basin, Tanzania. Ichthyol. Explor. Freshwat. 13(1):1-10. (Ref. 42930)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00445 - 0.02704), b=2.92 (2.71 - 3.13), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .