Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Cypriniformes
(Carps) > Danionidae
(Danios) > Danioninae
Etymology: ruhuna: The specific name is Sinhala for the south of the islandof Sri Lanka, to the rivers and streams of which this species is restricted..
More on authors: Pethiyagoda, Kottelat, Silva, Maduwage & Meegaskumbura.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; depth range 15 - 84 m (Ref. 75997). Tropical
Asia: Gin, Pol-Athu Modara, Nilwala and Bentara (Bentota) River basins in Sri Lanka.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.8 cm SL male/unsexed; (Ref. 75997)
Morphology | Morphometrics
Distinguished from all congeners by the combination of the following characters: lateral line complete, with 31-33+1-2 pored scales; ½6-½ 7/1/2 ½-3½ scales in transverse line on body, ½3/1/½ -1½ on caudal peduncle; body depth 2.9-3.1 times in SL; caudal peduncle length 11.8-13.5% SL; and lower jaw smooth, lacking tubercles (Ref. 75997).
Occurs in rainforest streams (Ref. 75997).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Pethiyagoda, R., M. Kottelat, A. Silva, K. Maduwage and M. Meegaskumbura, 2008. A review of the genus Laubuca in Sri Lanka, with description of three new species (Teleostei: Cyprinidae). Ichthyol. Explor. Freshwat. 19(1):7-26. (Ref. 75997)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00422 - 0.02262), b=3.04 (2.84 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.3 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).