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Teleostei (teleosts) > Synbranchiformes (Spiny eels) > Mastacembelidae (Spiny eels)
Etymology: Macrognathus: Greek, makros = great + Greek, gnathos = jaw (Ref. 45335).
More on author: Roberts.

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

Freshwater; demersal. Tropical

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

Asia: Meklong River basin, Thailand.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 17.8 cm male/unsexed; (Ref. 39392)

Short description Identification keys | 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 Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435)

Data deficient (DD) ; Date assessed: 10 March 2011

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00282 (0.00130 - 0.00610), b=2.96 (2.78 - 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): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (19 of 100).

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Macrognathus meklongensis Roberts, 1986