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> Gymnotiformes (Knifefishes) > Hypopomidae (Bluntnose knifefishes)
Etymology: Steatogenys: Greek, steatos = hard fat + Greek, genys, yos = jaw (Ref. 45335); ocellatus: From the Latin ocellus, diminutive of oculus, eye, in reference to the diagnostic eyelike marking at the pectoral-fin base..

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

; acqua dolce benthopelagico. Tropical

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

South America: Lago Amaña and Lago Tefe in the Upper Amazon basin of Brazil and also from a single specimen from Rio Itaya, a tributary of the Rio Amazonas near Iquitos, Peru.

Length at first maturity / Size / Peso / Age

Maturity: L_m ?, range 24 - ? cm
Max length : 40.5 cm TL maschio/sesso non determinato; (Ref. 51263)

Short description Chiavi di identificazione | Morfologia | Morfometria

Raggi anali molli: 167 - 195. Unique among species of Steatogenys in having very large maximum body size (length to end of anal fin 32 cm); distinct round or oval spot on pectoral-fin base, approximately 1.5 eye widths in diameter; irregular dark blotches on pectoral fin forming a distinct mottled pattern; 15 pectoral-fin rays; relatively many scales over lateral (8-10); relatively many pored lateral line scales to end of anal fin (97-103); relatively few bands on body (6-7) and relatively short caudal appendage in intact specimens (11.4-29.6% TL) (Ref. 51263).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore : Albert, James S. | Collaboratori

Crampton, W.G.R., D.H. Thorsen and J.S. Albert, 2004. Steatogenys ocellatus: a new species of neotropical electric fish (Gymnotiformes: Hypopomidae) from the lowland Amazon basin. Copeia 2004(1):78-91. (Ref. 51263)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 10 September 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori

Ecology
Ecologia

Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Abundances

Life cycle
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Maturities
Fecundities
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Egg(s)
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Dinamica popolazioni larvali

Distribution
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Anatomy
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Cervelli
Otoliths

Physiology
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Visual pigment(s)
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Toxicities (LC50s)

Genetics
Genetica
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Human related
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Profili di acquacoltura
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Stamps, coins, misc.

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References
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00380 (0.00145 - 0.00994), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (31 of 100).

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Steatogenys ocellatus Crampton, Thorsen & Albert, 2004