Paraschistura kessleri, Kessler's loach

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Related species
- Species in
  Paraschistura
- Species in
  Nemacheilidae
- - Classification -
- Nemacheilidae
- Cypriniformes
- Teleostei
- Chordata
- Animalia

Paraschistura kessleri (Günther, 1889)

Kessler's loach

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$Image of Paraschistura kessleri (Kessler\$

Paraschistura kessleri
Picture by Keivany, Y.

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

Teleostei (teleosts) > Cypriniformes (Carps) > Nemacheilidae (Brook loaches)
Etymology: Paraschistura: Generic name taken from its similarity with the genus Schistura.
Eponymy: Karl Fedorovich (Theodorovich) Kessler (1815–1881) was a Russian-German zoologist and collector who was one of the founders of the St Petersburg Society of Naturalists (1868), and its President (1868–1879). [...] (Ref. 128868), visit book page.
More on author: Günther.

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

Freshwater; benthopelagic; pH range: 6.8 - 7.8; dH range: ? - 15. Subtropical; 15°C - 30°C (Ref. 2059)

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

Asia: Hamun-i-Lora and Hamun-e Mashkid basins in Iran, Afghanistan and Pakistan; Bolan, Nari and Bodo rivers in Pakistan.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.9 cm TL male/unsexed; (Ref. 125884); max. published weight: 1.63 g (Ref. 125884)

Short description Identification keys | Morphology | Morphometrics

i>Paraschistura kessleri is distinguished from its congeners in Iran, except P. turcmenica, by the complete absence of scales (vs. presence of scales at least on the caudal peduncle). It differs from P. turcmenica by having 10-12 distinct, regularly shaped and set dark-brown bars on the flank (vs. bars on the flank irregularly shaped and set, often dissociated into a marbled pattern or a row of midlateral blotches and a row of saddles on the back); from P. bampurensis by the absence of a suborbital flap (vs. presence), a blunt snout (vs. pointed) and a color patter composed of 10-12 dark-brown bars on the flank wider than interspaces (vs. 11-18, usually narrower than interspaces); from P. cristata by the absence of a dorsal adipose crest and procurrent caudal-fin rays in the adipose crest (vs. presence) and an incomplete lateral line (vs. complete). Additional characters useful to identify P. kessleri include the following: dorsal fin usually with 7 1/2 branched; spot at the base of first dorsal-fin rays bold; pelvic fin reaching to about 1-2 eye diameter in front of anus (Ref. 103390).

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

Main reference Upload your references | References | Coordinator | Collaborators

Freyhof, J., G. Sayyadzadeh, H.R. Esmaeili and M. Geiger, 2015. Review of the genus Paraschistura from Iran with description of six new species (Teleostei: Nemacheilidae). Ichthyol. Explor. Freshwat. 26(1):1-48. (Ref. 103390)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 30 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Food consumption
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Ecology
Ecology

Population dynamics
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Length-weight rel.
Length-length rel.
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Life cycle
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Anatomy
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Visual pigments
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Genetics
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Internet sources

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=0.00631 (0.00374 - 0.01065), b=3.12 (2.98 - 3.26), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.8 ±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).

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