Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Bagridae
Etymology: Batasio: Malabar voice as the name of the fish (Ref. 45335); macronotus: From the Greek makros, meaning long and notos, meaning ridge or back. In reference to the long adipose-fin base when compared to B. batasio. A noun in apposition.
Environment / Climate / Range
Freshwater; benthopelagic. Tropical, preferred ?
Asia: Kosi River drainage in eastern Nepal.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.9 cm SL male/unsexed; (Ref. 54041)
Morphology | Morphometrics
soft rays: 12 - 13;
Vertebrae: 40 - 41. Distinguished from its congeners, except Batasio batasio, in possessing a color pattern on the body consisting solely of horizontal stripes (vs. with vertical bars and spots, or a uniform dark brown color). Differs from B. batasio in having a shorter dorsal spine (14.0-16.1% SL vs. 16.7-18.5), longer adipose-fin base (28.3-31.8 % SL vs. 24.8-26.5), and a deeper body (19.5-21.2% SL vs. 17.0-17.4) and caudal peduncle (9.3-9.7% SL vs. 8.2-8.8) (Ref. 54041).
Found in lowland river with turbid water, mainly on sand substrate in lotic areas and sand/mud substrate with some submerged and emergent vegetation in lentic backwaters (Ref. 54041).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ng, H.H. and D.R. Edds, 2004. Batasio macronotus, a new species of bagrid catfish from Nepal (Teleostei: Bagridae). Ichthyol. Explor. Freshwat. 15(4):295-300. (Ref. 54041)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00361 - 0.01750), b=2.95 (2.77 - 3.13), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (22 of 100) .