Ageneiosus inermis, Manduba : fisheries, gamefish, aquarium

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Related species
- Species in
  Ageneiosus
- Species in
  Auchenipteridae
- - Classification -
- Auchenipterinae
- Auchenipteridae
- Siluriformes
- Teleostei
- Chordata
- Animalia

Ageneiosus inermis (Linnaeus, 1766)

Manduba

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Ageneiosus inermis
Picture by Magalhães, K.

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | 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 Ecologia

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

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

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

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 64.8 cm TL maschio/sesso non determinato; (Ref. 111518); peso massimo pubblicato: 3.1 kg (Ref. 111518)

Short description Chiavi di identificazione | Morfologia | Morfometria

Raggi anali molli: 34 - 40; Vertebre: 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 Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

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 | Bibliografia | Coordinatore : Ferraris, Jr., Carl J. | Collaboratori

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

Pesca: commerciale; Pesce da pesca sportiva: si; Acquario: Acquari pubblici

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Alimentazione
Consumo di cibo
Food rations
Predatori

Ecology
Ecologia

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamento
Abbondanza

Life cycle
Riproduzione
Maturità
Maturity/Gills rel.
Fecundity
Deposizione
Spawning aggregations
Uova
Egg development
Larve
Dinamica popolazioni larvali

Distribution
Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
BRUVS - Videos

Anatomy
Area branchiale
Brain
Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetica
Heterozygosity
Ereditarietà

Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.

Outreach
Collaboratori

Taxonomy
Nomi Comuni
Sinonimi
Morfologia
Morfometria
Immagini

References
Bibliografia

Strumenti

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Nomi Comuni | Photos

Fonti Internet

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).

Trophic level (Ref. 69278): 4.0 ±0.66 se; based on food items.

Resilienza (Ref. 120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (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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