Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > Cypriniformes
(Carps) > Danionidae
(Danios) > Rasborinae
Etymology: Rasbora: Rasbora, an Indian word for a fish, also used in Malay peninsula; naggsi: Named for Fred Naggs (Natural History Museum, London) for his support of biodivesity exploration and research in Sri Lanka..
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
Asia: Sri Lanka.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.7 cm SL male/unsexed; (Ref. 84057)
Morphology | Morphometrics
Vertebrae: 38. Rasbora naggsi is distinguished from all its congeners from India and Sri Lanka by a combination of the following characters: axial stripe anteriorly narrow, faint in preserved specimens; mouth terminal; symphysial knob and premaxillary lateral process absent;
½ 4/ 1/ 1 ½ scales in transverse line on body; post-dorsal length 43.8-46.5 % SL; and body depth 18.1-21.7 % SL (Ref. 84057).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Silva, A., K. Maduwage and R. Pethiyagoda, 2010. A review of the genus Rasbora in Sri Lanka, with description of two new species (Teleostei: Cyprinidae). Ichthyol. Explor. Freshwat. 21(1):27-50. (Ref. 84057)
IUCN Red List Status (Ref. 126983)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00253 - 0.01433), b=3.08 (2.87 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).