Schistura madhavai, Madhava’s stream loach

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Schistura madhavai Sudasinghe, 2017

Madhava’s stream loach
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Image of Schistura madhavai (Madhava’s stream loach)
Schistura madhavai
Picture by Hiranya Sudasinghe

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Cypriniformes (Carps) > Nemacheilidae (Brook loaches)
Etymology: Schistura: Greek, schizein = to divide + Greek, oura = tail; an allusion to forked caudal fins (Ref. 45335);  madhavai: Named for Madhava Meegaskumbura, professor of Molecular Biology at University of Peradeniya. A noun in the genitive case..

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

Freshwater; demersal. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: Sri Lanka.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL male/unsexed; (Ref. 116162)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 11; Anal soft rays: 8. Schistura madhavai differs from all its congeners from peninsular India and Sri Lanka by the combination of the following characters: 8-9 wide post-dorsal bars separated by narrow, white interspaces ¼-? the width of the bars; black bar at the base of the caudal fin arched, its posterior margin vaguely indented at bases of branched caudal-fin rays 3 and 14, wider than the interspaces on the body; 8+8 branched rays on emarginate caudal fin; incomplete lateral line ending beneath the dorsal-fin base; axillary pelvic lobe absent; adpressed pelvic fin just reaching the anus; 7½ branched rays on dorsal fin; pelvic-fin origin on a vertical through the last unbranched dorsal fin ray; and suborbital flap in males absent (Ref. 116162).

Biology     Glossary (e.g. epibenthic)

Inhabits a small stream about 2 m wide, flowing through sparsely-inhabited tea plantations, at an elevation of about 1000 m above sea level and with substrate consisting of pebbles and gravel. Prefers the faster-flowing areas of the stream. Occurs syntopically with the cyprinids Devario malabaricus (Jerdon), Puntius titteya (Deraniyagala), Pethia nigrofasciata (Günther), Rasbora dandia (Valenciennes), Rasboroides rohani (Batuwita, Silva & Edirisinghe), and the osphronemid Belontia signata (Günther). The introduced guppy Poecilia reticulata Peters was also recorded from this stream (Ref. 116162).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Sudasinghe, H., 2017. Schistura madhavai, a new species of hill-stream loach from Sri Lanka, with redescription of S. notostigma (Teleostei: Nemacheilidae). Zootaxa 4311(1):96-110. (Ref. 116162)

IUCN Red List Status (Ref. 130435)

  Critically Endangered (CR) (B1ab(iii)); Date assessed: 07 August 2019

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 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00311 - 0.01538), b=3.02 (2.85 - 3.19), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.0   ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).