Cat-eLog Right Scoloplacidae Right Scoloplax

Down Cat-eLog Data Sheet
Scientific Name Scoloplax distolothrix  Schaefer, Weitzman & Britski, 1989
Common Name
Type Locality Small tributary of Rio Batovi, upper Rio Xingú, Mato Grosso State, Brazil, 12°58'S, 53°37'W.
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. Distolo from the Greek for existing or occuring in pairs, and thrix from the Greek for hair, here used in reference to the paired bilateral mental barbels (gender feminine).
Down Species Information
Size 18mm or 0.7" 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.

The only Scoloplax that will usually have only three soft rays on the dorsal. No appreciable colour differences from that described for Scoloplax dicra.
Sexing Larger male specimens with large, fleshy tissue at ventral opening. Females without tissue sack.
Down Habitat Information
Distribution South America: Tocantins/Araguaia, Xingu, and Paraguay River basins.
Amazon, Lower Amazon, Xingu (click on these areas to find other species found there)
Amazon, Lower Amazon, Tocantins (click on these areas to find other species found there)
Amazon, Lower Amazon, Tocantins, Lower Tocantins, Araguaia (click on these areas to find other species found there)
La Plata, Paran√°, Paraguay (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.
Down Husbandry Information
Breeding Unreported in the aquarium.
Breeding Reports There is no breeding report.
Down Further Information
Reference Proceedings of the Academy of Natural Sciences of Philadelphia v. 141, pp 191, Figs. 2, 5, 6, 11.
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Last Update 2020 Oct 11 01:52 (species record created: 2012 Dec 26 21:59)