Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Synbranchiformes
(Spiny eels) > Mastacembelidae
Etymology: Macrognathus: Greek, makros = great + Greek, gnathos = jaw (Ref. 45335).
Environment / Climate / Range
Freshwater; benthopelagic. Tropical, preferred ?
Asia: known only from the type specimens from Inle lake basin in Shan States, Myanmar.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm NG male/unsexed; (Ref. 94495)
Morphology | Morphometrics
(total): 31 - 34;
soft rays: 60 - 68;
Vertebrae: 81. Very distinct coloration, body with a finely reticulate pattern not seen in other species; dorsal fin with fine longitudinal dark streaks similar to those seen in Macrognathus pancalus, M. zebrinus and M. meklongensis. The round spots on the caudal fin are not comparable to the ocelli of other species such as M. siamensis: the central portion is pale, rather than lying in a field of contrasting color, as do the pale circles surrounding the ocelli in other species. Similar but less well defined round spots are present on the anal fin (Ref. 7424).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Talwar, P.K. and A.G. Jhingran, 1991. Inland fishes of India and adjacent countries. Volume 2. A.A. Balkema, Rotterdam. (Ref. 4833)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: of no interest
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=0.00275 (0.00120 - 0.00632), b=2.96 (2.76 - 3.16), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.4 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 to moderate vulnerability (28 of 100) .