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Down arrow Cat-eLog Data Sheet
Scientific Name Acestridium dichromum  Retzer, Nico & Provenzano, 1999
Common Names Green Whiptail
Green Whiptail Catfish
Type Locality Pozo Lucas, tributary of Río Orinoco, 7 kilometers south of San Fernando de Atabapo, 4°02'N, 67°42'W, Orinoco Basin, Amazonas State, Venezuela.
Pronunciation die krow mum
Down arrow Species Information
Size 63mm or 2.5" SL. Find near, nearer or same sized spp.
Identification Acestridium was diagnosed by Schaefer (1991) based on the following characters: ten principal caudal-fin rays; plates at anterior snout margin forming conspicuous spatulate projection; head and body very slender, depressed; dorsal surface of head and trunk with longitudinal ridges; dorsal fin placed posteriorly, well beyond pelvic fin and just anterior to anal-fin origin; adipose fin absent; dermal plates anterior to first dorsal-fin proximal radial expanded, bearing ventromedial keel contacting the dorsal margin of the neural arches of the vertebrae six through twelve; and ridge of bone on the ventral surface of the lateral ethmoid contacting the metapterygoid channel reflected mesially.

This fish is unusual among suckermouths in its spectacular laser green colouration.
Down arrow Habitat Information
Distribution South America: Upper Orinoco and Negro River basins.
Amazon, Middle Amazon (Solimoes), Negro, Upper Negro, Casiquiare (click on these areas to find other species found there)
Orinoco, Middle Orinoco (click on these areas to find other species found there)
Orinoco, Upper Orinoco (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
Temperature 23.0-28.0°C or 73.4-82.4°F (Show species within this range)
Other Parameters Requires a strong current.
Down arrow Husbandry Information
Feeding Supplement algae by introducing algae covered rocks.
Compatibility Sensitive and difficult to maintain it fairs best in a species tank.
Breeding Unreported.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Ichthyological Exploration of Freshwaters v. 10 (no. 4), pp 316, Figs. 3a-c.
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Last Update 2020 Sep 16 01:48 (species record created: 2002 Jun 05 00:00)