Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
Asia: Meklong River basin, Thailand.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 17.8 cm male/unsexed; (Ref. 39392)
Morphology | Morphometrics
Concave rostrum bearing 9-11 pairs of tooth plates; coloration very distinctive; 10-12 faint small ocelli along base of dorsal fin; dorsal and anal fins with fine dark striation. Dorsal, anal and caudal fins entirely separate. Rim of anterior nostril with 6 fingerlike projections. Penultimate (enlarged) dorsal fin spine articulating with same vertebra (33-35) as enlarged anal fin spine (Ref. 39392).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Roberts, T.R., 1986. Systematic review of the Mastacembelidae or spiny eels of Burma and Thailand, with description of two new species of Macrognathus. Jap. J. Ichthyol. 33(2):95-109. (Ref. 39392)
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
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00140 - 0.00784), b=2.95 (2.76 - 3.14), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±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
): Low to moderate vulnerability (28 of 100) .