Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Gymnotiformes (Knifefishes) >
Sternopygidae (Glass knifefishes) > Eigenmanninae
Etymology: Eigenmannia: From Eigenmann, 1910, researcher of faunistic studies (Ref. 45335); bumba: Name from 'bumba meu boi' or 'boi-bumbá', referring to a folklore character in Northern Brazil; noun in apposition.
Eponymy: Professor Dr Carl Henry Eigenmann (1863–1927) was a German-born American ichthyologist. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; depth range 1 - 2 m (Ref. 138579). Tropical
South America: NE Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.9 cm TL male/unsexed; (Ref. 138579)
Short description
Identification keys | Morphology | Morphometrics
Anal soft rays: 176 - 205. This species, a member of the E. trilineata species-group, is distinguished by the following characters: anal-fin hyaline; absence of enlarged eye. 21.3-25.4% HL; presence of a short caudal filament, 19.2-30.8% LEA; mouth subterminal; lateral line stripe restricted to last two thirds of body; presence of a superior midlateral stripe; A 176-205; scales rows above lateral line 10-15; scales on lateral line 109-125; premaxillary teeth 19-23; dentary teeth 20-29; endopterygoid teeth 6-10; depth of posterodorsal expansion on infraorbitals 1+2 half as long as infraorbitals 1+2 length; basibranchial 1 unossified; precaudal vertebrae 13-14; length of coronomeckelian bone corresponding to 20% of Meckel’s cartilage length (Ref. 138579).
Body shape (shape guide): elongated; Cross section: compressed.
Specimens were collected in clear and slow flowing waters with sand and organic matter as substrate. Sampled sites were 5-15 m in width and 1.7 m deep, with riparian vegetation mostly grassy and herbaceous vegetation (Ref. 138579).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Dutra, G.M., T.P.A. Ramos and N.A. Menezes, 2022. Description of three new species of Eigenmannia (Gymnotiformes: Sternopygidae) from the rio Mearim and rio Parnaíba basins, northeastern Brazil. Neotropical Ichthyol. 20(1):e210117: 1-23. (Ref. 138579)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
Special reports
Download XML
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=0.00355 (0.00161 - 0.00782), b=2.97 (2.77 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.1 ±0.3 se; based on size and trophs of closest relatives |
Fishing Vulnerability (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |