Cat-eLog Right Arrow Scoloplacidae Right Arrow Scoloplax

  • Scoloplax baskini
  • Scoloplax baskini
  • Scoloplax baskini
Jump to next section Cat-eLog Data Sheet
Scientific Name Scoloplax baskini  Rocha, de Oliveira & Rapp Py-Daniel, 2008
Common Name
Type Locality Nova Aripuanã, rio Aripuanã, igarapé Palhalzinho, 5°59'32.3''S, 60°12'35''W, Amazonas State, Brazil.
Pronunciation SKOW low plax
Etymology Scoloplax: From the Greek skolos, meaning thorn and plax, meaning plate; in reference to the moveable dermal bone on top of snout (rostral plate) that is studded with large integumentary teeth. Species name in honor of Jonathan Baskin for his significant contributions to Neotropical ichthyology including the description of the genus Scoloplax.
Jump to next section Species Information
Size 16mm or 0.6" SL. Find near, nearer or same sized spp.
Identification Species of the neotropical family Scoloplacidae are distinguished from other Siluriformes by the presence of a conspicuous shield-shaped rostral plate bearing numerous large and recurved odontodes. Scoloplacidae is a monogeneric family endemic to South America and known from the Amazon, Paraguay, and Parana basins. The worlds smallest known catfish are from this genus, the smallest is most likely S. dolicholophia.

From the original description:Body overall brownish, more pigmented laterally with wide longitudinal dark brown stripe along lower region of trunk from pectoral to caudal fin. Mid-ventral plate series less pigmented. Dorsal part of body pale except for three narrow dark saddles. First saddle faint, at dorsal fin origin; other two saddles darker and evenly spaced between dorsal and caudal fins. Ventral portion of body pale, creamcolored, sometimes with dark pigment concentrated along lateral edges and more diffuse pigment across abdomen. Dorsal fin darkly pigmented along base and hyaline distally. Pectoral fin largely hyaline except for dark spots clustered in spear-like submarginal band. Pelvic fin largely hyaline except for faint dark submarginal band. Anal fin with two thin dark transverse bands, one near base and the other near mid-length. Base of caudal fin with dark brown spot extending anteriorly onto caudal peduncle. Remaining caudal fin hyaline except for dark pigment forming blotchy subterminal distal band.
Sexing Larger male specimens with large, fleshy tissue at ventral opening. Females without tissue sack.
Jump to next section Habitat Information
Distribution Small clearwater tributaries of the middle part of rio Aripuanã.
Amazon, Middle Amazon (Solimoes), Madeira, Aripuanã (click on these areas to find other species found there)

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Jump to next section Husbandry Information
Furniture In the wild found among leaf litter.
Breeding Unreported.
Breeding Reports There is no breeding report.
Jump to next section Further Information
Reference Neotropical Ichthyology v. 6 (no. 3), pp 324, Figs. 1-3, 4c, 5.
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Last Update 2019 Oct 09 09:34 (species record created: 2008 Dec 19 07:24)