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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: Hora.

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

Freshwater; demersal; pH range: 7.0 - ? ; dH range: 15 - ?. Tropical; 24°C - 27°C (Ref. 13371)

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

Asia: Mekong and Chao Phraya basins, southeastern Thailand, Malay Peninsula and Sumatra, Indonesia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 28.6 cm TL male/unsexed; (Ref. 125890); max. published weight: 67.00 g (Ref. 125890)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 26 - 30. Differs from all other mastacembelids found in Myanmar and Thailand in having body with a series of very regular, oblique, dark bars, each with a narrow extension extending partially or entirely across abdomen, and having ripe females with a very elongate genital papillae (Ref. 39392).

Occurs in streams to peats (Ref. 57235). Found in medium to large-sized rivers and flooded fields (Ref. 12975). Nocturnal, feeding on invertebrates and small fishes (Ref. 13371). Commonly seen in aquarium trades and fish markets (Ref. 57235).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Kottelat, M., 2001. Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 11 December 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
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Predators

Ecology
Ecology

Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
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Life cycle
Reproduction
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
Larvae
Larval dynamics

Distribution
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Anatomy
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Brains
Otoliths

Physiology
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Oxygen consumptions
Swimming type
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Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)

Genetics
Genetics
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Human related
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Strains
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Stamps, coins, misc.

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Internet sources

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=0.00389 (0.00238 - 0.00636), b=3.02 (2.88 - 3.16), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.0 ±0.61 se; based on food items.

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).

Macrognathus circumcinctus (Hora, 1924)