Ageneiosus marmoratus – Bottlenose Catfish — Seriously Fish | 水產百科網

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Ageneiosus: from the Ancient Greek ἀ- (a-), meaning ‘without’, and γένια (génia), meaning ‘beard’, in reference to this species’ very small barbels.

marmoratus: from the Latin marmoratus, meaning ‘marbled’, in reference to the species’ colour pattern.

Order: Siluriformes Family: Auchenipteridae[1][2]

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 a tributary of the Potaro River, itself an affluent of the much larger Essequibo system.

Current knowledge suggests it to occur over a huge area since its also been recorded from the Courantyne/Corantijn basin in western Guyana and Suriname, the upper Amazon region in Peru and Ecuador, and there is also a questionable record from the Paraná drainage in Argentina.

Given its enormous natural range this species is likely to be something of a habitat ge...