Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Apteronotus: Greek, apteros = without wings / (in this cases, fins) + Greek, noton = back (Ref. 45335); ferrarisi: Named for Carl J. Ferraris Jr. for his contirbutions to tropical freshwater fishes worldwide (Ref. 93867).
Eponymy: Dr Carl James Ferraris Jr (d: 1950) is an American ichthyologist and fish taxonomist who is a recognised authority on catfish. [...] (Ref. 128868), visit book page.
Issue
The report of Apteronotus sp. from the Tocuyo-Yaracuy region is presumably based on A. ferrarisi, which is the only member of the genus known to occur in those basins (Ref. 93867).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Venezuela.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 27.4 cm TL male/unsexed; (Ref. 93867)
Short description
Identification keys | Morphology | Morphometrics
Anal soft rays: 150 - 167; Vertebrae: 61 - 71. This species can be distinguished from its congeners by the following set of characters: A 150-167; P 13-17; C 15-17; total vertebrae 61-71; 5th infraorbital absent as a tubular laterosensory canal segment; ossified lateral ethmoid; the number of scales above the lateral line at the midbody 10-13; the number of scales along the lateral line 73-80; the extent of the middorsal groove; tail length 6.9-9.9 % of LEA; mouth length 49.4-56.4% of HL; tail depth 22.2-28.7% of CL; orbital diameter 4.0-5.9% of HL. Colouration: body dark and head dark brown; prominent pale, broad, longitudinal band extending from chin along dorsal midline of head and body to beginning of dorsal filament; pectoral- and anal-fin rays dark brown with translucent interradial membranes; pale band encircling base of caudal fin; caudal fin pale at base and dark brown posteriorly (Ref. 93867).
Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
de Santana, C.D. and R.P. Vari, 2013. Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00145 - 0.00867), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (17 of 100).
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