Edit Ageneiosus inermis
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Name
Scientific name
Ageneiosus inermis
Described by
Authority Linnaeus, Year 1766, Bracketed
Family
Auchenipteridae
Common names
Manduba
Photograph credits
All 3 credited
Summary
The manduba, Ageneiosus inermis, is a large auchenipterid catfish found throughout much of South America east of the Andes. At around 470 m…
Size and aquarium
Maximum size
470mm, standard length
Aquarium size
Minimum length 400 cm, Minimum depth 120 cm
Water
Water conditions
Temperature 22.5–26°C, pH 5.5–7.5
Hardness
1–20dGH
Conductivity
Not recorded
Behaviour
Temperament
Not recorded
Social needs
Not recorded
Community suitability
Not recorded
Where it lives
Countries, regions, rivers and lakes
Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Suriname, Venezuela, Amazon, de la Plata, Madeira, Negro, Orinoco, Paraná, Parnaíba, Tapajós, Tocantins, Uruguay, Xingu
Writing
Etymology
Ageneiosus: from the Greek á- (Gr. ἄ), meaning 'not, without' and géneion (Gr. γένειον), meaning 'chin, beard', probably in reference to the very short maxilla…
Distribution
The type locality is gievn simply as 'Surinami' (Suriname), but the species appears widely-distributed throughout much of South America east of the Andes mount…
Habitat
Given its enormous natural range this species is likely to be something of a habitat generalist, but most records we've seen pertain to the lower sections of r…
Aquarium size
Aquarium base dimensions in excess of 400 ∗ 120 cm would be required for fully-grown adult specimens, meaning this species is largely unsuitable for private aq…
Maintenance
Likely to prefer dim lighting and access to refuges in the form of driftwood, large rocks or lengths of plastic piping. An enormous filtration system and dedic…
Water conditions
Not written yet
Diet
Larger Ageneiosus spp. are obligate carnivores by nature feeding on invertebrates and other fishes, and capable of consuming surprisingly large prey. Newly-imp…
Behaviour and compatibility
This species is capable of consuming large prey items and is likely to be safe only alongside similarly-sized catfishes or pelagic characins such as Brycon, Co…
Sexual dimorphism
Adult males of Ageneiosus spp. all display marked, seasonal, sexual modifications, with the area between head and dorsal fin origin (nuchal region) exhibiting …
Reproduction
Unrecorded in aquaria although some brief reports of apparent courtship behaviour in the congener A. marmoratus do exist. What is known is that fertilisation o…
Notes
The genus Ageneiosus was at one point classified in the family Ageneiosidae alongside the genus Tetranematichthys, but this was not accepted by all authors. Th…
References
References
7 on this profile