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Macrognathus aculeatus (Bloch, 1786)

Lesser spiny eel
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Image of Macrognathus aculeatus (Lesser spiny eel)
Macrognathus aculeatus
Picture by Roberts, T.R.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

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

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

Freshwater; brackish; benthopelagic; pH range: 6.5 - 7.5; dH range: ? - 15; potamodromous (Ref. 51243). Tropical; 23°C - 28°C (Ref. 1672)

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

Asia: Thailand, Malay Peninsula, Borneo and Indonesia. Reported from Bangladesh (Ref. 1479) and Nepal (Ref. 9496); India (Ref. 43634); Viet Nam (Ref. 89724).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 38.0 cm TL male/unsexed; (Ref. 2073)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 14 - 20; Dorsal soft rays (total): 52 - 56; Anal spines: 3; Anal soft rays: 50 - 54. Body with series of obliquely oriented bars (Ref. 39392). Dorsal and anal fins with a row of isolated spines followed by a long continuous soft portion, both fins extending to but not confluent with caudal fin. Pelvic fins absent. Caudal fin rounded (Ref. 4792).

Biology     Glossary (e.g. epibenthic)

Adults occur in medium to large-sized rivers (Ref. 12975). Found in lowland wetlands and peats. Uncommonly seen in aquarium trades (Ref. 57235).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Produces a minimum of 1000 eggs (Ref. 1672).

Main reference Upload your references | References | Coordinator | Collaborators

Roberts, T.R., 1989. The freshwater fishes of Western Borneo (Kalimantan Barat, Indonesia). Mem. Calif. Acad. Sci. 14:210 p. (Ref. 2091)

IUCN Red List Status (Ref. 130435: Version 2024-1)

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

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: minor commercial; aquarium: commercial
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
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Eggs
Egg development
Larvae
Larval dynamics
Distribution
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BRUVS - Videos
Anatomy
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Physiology
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Nutrients
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Visual pigments
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Toxicity (LC50s)
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Genetics
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Stamps, coins, misc.
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Taxonomy
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References
References

Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

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=0.00372 (0.00286 - 0.00483), b=2.99 (2.93 - 3.05), in cm total length, based on LWR estimates for this species (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 (Fec>1000).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (28 of 100).
Price category (Ref. 80766):   Unknown.
Nutrients (Ref. 124155):  Calcium = 210 [137, 386] mg/100g; Iron = 1.84 [1.13, 3.19] mg/100g; Protein = 17.5 [16.1, 18.9] %; Omega3 = 0.148 [0.075, 0.280] g/100g; Selenium = 54.4 [27.3, 109.2] μg/100g; VitaminA = 26.3 [11.8, 56.9] μg/100g; Zinc = 1.15 [0.86, 1.53] mg/100g (wet weight); based on nutrient studies.