|Cat-eLog Data Sheet|
|Scientific Name||Hypophthalmus fimbriatus Kner, 1858|
|Common Name||Dolphin Catfish|
|Type Locality||Rio Negro, South America.|
|Pronunciation||hi pop thal muss|
|Etymology||(Greek)Hypo=Under + (Greek)opthalmos=eye.|
|Identification||Hypophthalmus fimbriatus is quite distinct from its congeners because of its greatly elongate, flat and thick mental barbels. No other known catfish species has as large mental barbels, relative to body length. It also has a deeply forked caudal fin.|
|General Remarks||It has been hypothesized that the large barbels are sensory organs that, when projected forward, allow the fish to 'feel' about olfactorily, and perhaps electrically, for Zooplankton concentrations. Once Zooplankton concentrations are found, they are sucked in and the larger cladocerans are sieved out by the gillrakers.|
|Distribution||Amazon River at Santarém and the Negro River basin, Brazil and Venezuela.
Amazon, Lower Amazon (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Negro (click on these areas to find other species found there)
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|Feeding||Studies show H. fimbriatus is mostly zooplanktivorous, and that cladocerans (water fleas) are the principal zooplankton eaten. It is believed that H. fimbriatus is a filter feeder through the sieving action of its gillrakers.|
|Breeding||Unreported in the aquarium.|
|Breeding Reports||There is no breeding report.|
|Reference||Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 26 (s. 373), pp 444 , Pl. 9 (fig. 30).|
|Registered Keepers||Keeping this species? Why not .
There is no registered keeper.
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There is no wish to keep this species.
|Spotters||Spotted this species somewhere? Click the binoculars!
There is no record of this fish being seen.
|More on Hypophthalmus fimbriatus|
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|Last Update||2019 Oct 13 03:28 (species record created: 2001 Nov 05 00:00)|