Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Siluriformes
(Catfishes) > Sisoridae
(Sisorid catfishes) > Glyptosterninae
Etymology: Exostoma: Greek, exos = outside + Greek, stoma = mouth (Ref. 45335); sawmteai: Named after Sawmtea (Vanalalmalsawma), field assistant to Lalramliana (Ref. 103394)
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
Asia: known only from the type locality, Pharsih River, a tributary of Tuivai River (Barak River drainage) in Mizoram, northeast India (Ref. 103394).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.5 cm SL male/unsexed; (Ref. 103394)
Morphology | Morphometrics
soft rays: 7;
Vertebrae: 38 - 39. Exostoma sawmteai differs markedly from the other species of the genus from Ganges-Brahmaputra basin in having the posterior end of the adipose fin adnate with (vs. separated by a distinct notch from) the dorsal procurrent caudal-fin rays; further differs from all congeners in having a unique combination of the following characters: snout length 48-55 % HL; eye diameter 8-11 % HL; pectoral-pelvic distance 28.6-32.8 % SL; body depth at anus 11.5-14.1 % SL; length of adipose-fin base 30.7-37.2 % SL; caudal-peduncle length 18.4-20.3 % SL; caudal-peduncle depth 10 .1-11. 7 % SL; lunate caudal fin; and 38-39 total vertebrae (Ref. 103394).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lalramliana, S. Lalronunga, Lalnuntluanga and H.H. Ng, 2015. Exostoma sawmteai, a new sisorid catfish from northeast India (Teleostei: Sisoridae). Ichthyol. Explor. Freshwat. 26(1):59-64. (Ref. 103394)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00307 - 0.01489), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±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.).
Vulnerability (Ref. 59153
): Moderate vulnerability (35 of 100) .