All FishesLoricariidaeHypoptopomatinaeAcestridium  |  | 

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Scientific Name Acestridium dichromum  Retzer, Nico & Provenzano, 1999
Common Names Green Whiptail
Green Whiptail Catfish, Grøn Grenmalle (Denmark)
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
Hop to next section 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.
Hop to next section 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 Least Concern, range map and more is available on the IUCN species page. Last assessed 2020.
Temperature 23.0-28.0°C or 73.4-82.4°F (Show species within this range)
Other Parameters Requires a strong current.
Hop to next section Husbandry Information
Feeding Supplement algae by introducing algae covered rocks. User data.
Compatibility Sensitive and difficult to maintain it fairs best in a species tank.
Breeding Unreported.
Breeding Reports There is no breeding report.
Hop to next section Further Information
Reference Ichthyological Exploration of Freshwaters v. 10 (no. 4), pp 316, Figs. 3a-c.
Registered Keepers There is no registered keeper.
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There are 5 records of this fish being seen, view them all.
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Last Update 2023 Aug 10 04:08 (species record created: 2002 Jun 05 00:00)