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Eigenmannia antonioi Peixoto, Dutra & Wosiacki, 2015

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drawing shows typical species in Sternopygidae.

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

Teleostei (teleosts) > Gymnotiformes (Knifefishes) > Sternopygidae (Glass knifefishes)
Etymology: Eigenmannia: From Eigenmann, 1910, researcher of faunistic studies (Ref. 45335);  antonioi: The epithet antonioi is in memory to Antônio da Silva Wanderley, grandfather of the first author (Ref. 115689).

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

Freshwater; benthopelagic. Tropical

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

South America: known only from Rio Anapu at Floresta Nacional de Caxiuanã, a tributary of the lower portion of Rio Amazonas, state of Pará, Brazil (Ref. 115689).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 20.5 cm TL male/unsexed; (Ref. 115689)

Short description Identification keys | Morphology | Morphometrics

Anal soft rays: 166 - 207. Diagnosis: can be distinguished from other species in the E. trilineata species group, except E. microstoma and E. trilineata, by the mouth width 20.0–25.1% HL (versus 13.1–18.4% in E. desantanai; 12.9–17.5% in E. guairaca; 12.6–16.1% in E. matintapereira; 13.2–18.1% in E. muirapinima; 10.8–19.0 in E. pavulagem; 9.5–17.2% in E. vicentespelaea; and 9.5–14.6% in E. waiwai); Eigenmannia antonioi differs from E. microstoma and E. trilineata by the suborbital depth 18.4–27.8% HL (versus 29.9–40.8% and 32.5–46.6%, respectively); by the dentition pattern of the premaxilla with 8 to 12 teeth distributed in 2 rows (outermost row with 3 to 6 teeth, innermost row with 4 to 6 teeth) [versus 16 teeth distributed in 3 rows (outermost row with 5 teeth, median row with 6, innermost with 5 teeth) in E. microstoma, and the 31–33 teeth distributed in 4 rows (outermost row with 8 or 9 teeth, 2nd row with 5 or 6, 3rd row with 10; innermost with 7 or 9 teeth) in E. trilineata] and by the length of anterodorsal process of maxillary corresponding to 50% of the width of the posterior nostril (versus equal to the width of the posterior nostril in E. trilineata and E. microstoma); Eigenmannia antonioi can be further distinguished from E. microstoma by the length of the coronomeckelian bone 20% of the length of Meckel’s cartilage (versus 45% of the length of Meckel’s cartilage in E. microstoma); distinguished from E. trilineata by the depth of the posterodorsal expansion on infraorbitals 1 + 2, which approximately equals the total length of infraorbitals 1 + 2 (versus less than 50% of the length of infraorbitals 1 + 2 in E. trilineata), and by 8 or 9 endopterygoid teeth (versus 17 in E. trilineata) (Ref. 115689).

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator : Albert, James S. | Collaborators

Peixoto, L.A.W., G.M. Dutra and W.B. Wosiacki, 2015. The electric glass knifefishes of the Eigenmannia trilineata species-group (Gymnotiformes: Sternopygidae): monophyly and description of seven new species. Zool. J. Linn. Soc. 175:384-414. (Ref. 115689)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 07 January 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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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 | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | 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=0.00363 (0.00172 - 0.00768), b=2.97 (2.78 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).