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Rasboroides rohani Batuwita, de Silva & Edirisinghe, 2013

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Teleostei (teleosts) > Cypriniformes (Carps) > Danionidae (Danios) > Rasborinae
Etymology: rohani: Named for Rohan Pethiyagoda, founder of the Wildlife Heritage Trust of Sri Lanka (WHT), for his special commitment to the ichthyofauna of Sri Lanka and India; and for continuing support of biodiversity research and conservation in Sri Lanka..

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical

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Asia: Walawe River basin in Sri Lanka.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 3.6 cm SL male/unsexed; (Ref. 94541); 3.1 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 10; Anal soft rays: 9; Vertebrae: 29. Rasboroides rohani can be diagnosed from other congeners, R. vaterifloris and R. nigromarginatus, by having the dorsal-fin origin 3 (vs. 1) scale-widths behind pelvic-fin origin; and body depth 35.6-40.0 % SL in males, 33.3-36.8 % SL in females (vs. 31.1-32.8 in males and 31.0-31.7 in female R. vaterifloris, 28.2-33.0 in male and 26.9-29.1 in female R. nigromarginatus). It can be distinguished from R. pallidus by its greater size (up to 35.5 mm SL, vs. 24.6) and having 1/2 8 1/2 (vs. 1/2 6 1/2 or 1/2 7 1/2) scales on body in transverse line, 25-28 (vs. 20-24) scales in lateral series, 1 (vs. 2) lateral process on the kinethmoid and the pharyngeal-teeth formula of 5,4,2-2,4,5 (vs. 5,4,3-3,4,5). In addition, females of R. rohani can be separated from females of R. pallidus by having a lesser eye diameter (29-34 % HL, vs. 39-40) and a lesser interorbital width (25-28 % HL, vs. 33- 36) (Ref. 94541).

Biology     Glossary (e.g. epibenthic)

Occurs in shallow, slow-flowing, shady streams with sandy-silt substrate and dense leaf litter in submontane forest. Sympatric with other fishes: Pethia nigrofasciata, Puntius titteya, Belontia signata and Rasbora microcephala (Ref. 94541).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Batuwita, S., M. de Silva and U. Edirisinghe, 2013. A review of the danionine genera Rasboroides and Horadandia (Pisces: Cyprinidae), with description of a new species from Sri Lanka. Ichthyol. Explor. Freshwat. 24(2):121-140. (Ref. 94541)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00376 - 0.01926), b=3.07 (2.87 - 3.27), 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. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).