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  • Acestridium discus
Jump to next section Cat-eLog Data Sheet
Scientific Name Acestridium discus  Haseman, 1911
Common Name Whiptail Catfish
Type Locality Igarapé de Cachoeira Grande, near Manaus, Amazonas State, Brazil.
Jump to next section Species Information
Size 67mm or 2.6" 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.
Jump to next section Habitat Information
Distribution South America: Lower Negro River basin.
Amazon, Middle Amazon (Solimoes), Negro, Lower Negro (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
Temperature 26.0-30.0°C or 78.8-86°F (Show species within this range)
Jump to next section Husbandry Information
Feeding These fish graze on algae and aufwuchs and will accept Artemia nauplia as an alternative. Despite this over several months they will often become progressively thinner which is indicative of a deficient diet.
Furniture In nature, this fish inhabits grassy, cool, shady, swampy creeks (according to Haseman, 1911).
Breeding Unreported.
Breeding Reports There is no breeding report.
Jump to next section Further Information
Reference Annals of the Carnegie Museum v. 7 (nos 3-4) (17), pp 319, Pls. 50 (fig. 1), 51.
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Last Update 2019 Sep 22 08:03 (species record created: 2006 Aug 21 02:09)