Ageneiosus inermis, Manduba : fisheries, gamefish, aquarium

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  Auchenipteridae
- - Classification -
- Auchenipterinae
- Auchenipteridae
- Siluriformes
- Teleostei
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Ageneiosus inermis (Linnaeus, 1766)

Manduba

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Ageneiosus inermis
Picture by Magalhães, K.

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Auchenipteridae (Driftwood catfishes) > Auchenipterinae
Etymology: Ageneiosus: Greek, a = without + greek, geneias, -ados = bear, chin (Ref. 45335).
More on author: Linnaeus.

Issue
Redescribed in Walsh (pers comm., and 1990) as Ageneiosus brevifilis Valenciennes.

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

; sötvatten pelagiska; pH range: 6.5 - 7.8; dH range: ? - 20. Tropical; 22°C - 24°C (Ref. 2060)

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

South America: Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Suriname, and Venezuela (Ref. 37098). Reported from Uruguay (Ref. 54736).

Size / Vikt / Age

Maturity: L_m ? range ? - ? cm
Max length : 64.8 cm TL hane/ej könsbestämd; (Ref. 111518); publicerad maxvikt: 3.1 kg (Ref. 111518)

Short description Bestämningsnycklar | Morfologi | Morfometri

Mjukstrålar i analfenan: 34 - 40; Ryggkotor: 46 - 51. Body naked and elongated. Head is pointed and depressed at the top. Mouth is big and wide. The lateral eyes are situated along the level of the mouth, ensuring a vision above and below. Exhibits sexual dimorphism, like A. dentatus. The first ray of the dorsal fin is very long and has pointed spines (Ref. 35381).

Prefers rivers in overgrown backwaters where the current is not too strong. Reported to be nocturnal. Feeds on fish and crustaceans. The flesh is esteemed for its very fine flavor. Frequently captured with nets, with males difficult to release from the nets because of its strong dorsal spine that is bordered with denticles (Ref. 27188). During reproduction, the mandibular barbels and dorsal spine of the male change, and a copulatory organ appears at the anterior level of the anal fin. Fertilization is internal, the female being capable of keeping the spermatozoids inserted in the epithelium of her genital tract (Ref. 35381).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Female lays eggs on plants a few days after fertilization (Ref. 2060). The females can preserve keep fertile spermatozoids by coating these with secretions of maternal origin and inserting these in the epithelium of its genital tract (Ref. 27188).

Main reference Upload your references | referenser | Koordinator : Ferraris, Jr., Carl J. | Medarbetare

Ferraris, C.J. Jr., 2003. Auchenipteridae (Driftwood catfishes). p. 470-482. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37098)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 07 August 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fiskeri: kommersiell; sportfisk: ja; Akvarium: Offentliga akvarier

FAO - Publication: search | FishSource |

Ytterligare information

Trophic ecology
Födoslag
Födosammansättning
Födointag
Food rations
Predatorer

Ecology
Ekologi

Population dynamics
Tillväxtparametrar
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Rekrytering
Abundans

Life cycle
Reproduktion
Könsmognad
Maturity/Gills rel.
Fecundity
Lek
Spawning aggregations
Ägg
Egg development
Larver
Larvdynamik

Distribution
Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
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Anatomy
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Otolith

Physiology
Body composition
Nutrients
Syreförbrukning
Swimming type
Simhastighet
Visual pigments
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Toxicity (LC50s)

Genetics
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Heterozygosity
Ärftlighet

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Stamps, coins, misc.

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Taxonomy
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synonymer
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References
referenser

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00955 (0.00735 - 0.01241), b=3.03 (2.97 - 3.09), in cm total length, based on LWR estimates for this species (Ref. 93245).

Trofisk nivå (Ref. 69278): 4.0 ±0.66 se; based on food items.

Resiliens (Ref. 120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Assuming tm=2-4, Fec>1000).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (46 of 100).

Price category (Ref. 80766): Unknown.

Nutrients (Ref. 124155): Calcium = 109 [55, 259] mg/100g; Iron = 1.47 [0.80, 2.90] mg/100g; Protein = 17.7 [15.4, 19.8] %; Omega3 = 0.247 [0.100, 0.606] g/100g; Selenium = 36.8 [13.5, 100.3] μg/100g; VitaminA = 31.7 [10.5, 99.2] μg/100g; Zinc = 1.42 [0.91, 2.14] mg/100g (wet weight); based on nutrient studies.

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