Exostoma hajiensis

Exostoma hajiensis Tenali, Kumar, Kumawat, Singh & Sarkar, 2025

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

Teleostei (teleosts) > Siluriformes (Catfishes) > Sisoridae (Sisorid catfishes) > Glyptosterninae
Etymology: Exostoma: Greek, exos = outside + Greek, stoma = mouth (Ref. 45335); hajiensis: Name 'hajiensis from the type locality of the new species, Haji stream.

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

Freshwater; demersal. Subtropical

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

Asia: India.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 6.7 cm SL male/unsexed; (Ref. 138833)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 5 - 6; Anal soft rays: 4 - 5. This species is distinguished from its congeners by the following set of characters: posterior extremity of adipose fin base distinctly angular with sharply pointed dorsoposterior margin; tip of maxillary barbel extending beyond the origin of pectoral-fin base; nasal barbel not reaching anterior margin of orbit; both parallel and rounded striae on the anterolateral surfaces of the lips present; snout (53.7?60.9% HL); predorsal length (41.5–-4.9% SL); pelvic fin length (15.9?16.7% SL); preanal length (75.8?78.1% SL); outer mandibular barbel (15.1–-0.4% HL); adipose fin base length (23.1?26.7% SL); dorsal-adipose distance (10.2?17.1% SL); and caudal peduncle (15.4?19.6% SL) (Ref. 138833).
Body shape (shape guide): elongated.

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator | Collaborators

Tenali, D.R., A. Kumar, T. Kumawat, R.K. Singh and U.K. Sarkar, 2025. Exostoma hajiensis, a new sisorid catfish, (Teleostei: Sisoridae) from Arunachal Pradesh, North-Eastern India. Rec. zool. Surv. India 125:1-8. (Ref. 138833)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

Not Evaluated 

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
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Abundance
Life cycle
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Maturity
Maturity/Gills rel.
Fecundity
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Distribution
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Anatomy
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Stamps, coins, misc.
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Taxonomy
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References

Tools

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Summary page | Point data | Common names | Photos

Internet sources

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

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00589 (0.00261 - 0.01327), b=3.08 (2.88 - 3.28), 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) 		Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability
(Ref. 59153) 		Low vulnerability (10 of 100). 🛈