Edit Ageneiosus marmoratus
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Name
Scientific name
Ageneiosus marmoratus
Described by
Authority Eigenmann, Year 1912
Family
Auchenipteridae
Common names
Bottlenose Catfish
Photograph credits
All 2 credited
Summary
The bottlenose catfish, Ageneiosus marmoratus, is a predatory auchenipterid catfish from Guyana, Suriname and the upper Amazon in Peru and …
Size and aquarium
Maximum size
185mm, standard length
Aquarium size
Minimum length 150 cm, Minimum depth 60 cm
Water
Water conditions
Temperature 22.5–26°C, pH 6–7
Hardness
3–10dGH
Conductivity
Not recorded
Behaviour
Temperament
Predatory
Social needs
Not recorded
Community suitability
Not recorded
Where it lives
Countries, regions, rivers and lakes
Brazil, Ecuador, Guyana, Peru, Suriname, Venezuela, Amazon, Essequibo, Nanay, Potaro
Writing
Etymology
Ageneiosus: from the Ancient Greek ἀ- (a-), meaning 'without', and γένια (génia), meaning 'beard', in reference to this species' very small barbels. marmoratus…
Distribution
The holotype was collected from a creek below the settlement of Potaro Landing in the Potaro-Siparuni region of central Guyana which almost certainly refers to…
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
Minimum base dimensions of 150 ∗ 60 cm cm are required for long-term care since this active species can sometimes behave skittishly and may injure itself by sw…
Maintenance
Ideally a soft, sandy substrate should be used though it is not essential. Additional furnishings are as much a case of personal taste as anything else but the…
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
Surprisingly peaceful with anything too large to swallow and can be maintained in a community provided tankmates are chosen with care. Aggressively territorial…
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 do exist. What is known is that fertilisation occurs internally via the modif…
Notes
This species may also be seen on sale as 'Guyana slopehead catfish' 'dolphin catfish' or 'hammerhead catfish'. The attractive juvenile patterning is largely lo…
References
References
7 on this profile