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Lives alongside the lineage 9 species Hoplisoma nattereri  in white water and clearwater streams in the coastal lowlands. The males do not sport the extended pectoral and dorsal spines as do other members of this genera. The females are wider in the girth when sexually mature, the males are smaller. As with other species of Scleromystax, will do better in cooler temperatures. Lineage: All Scleromystax species belong to Lineage 3 and would remain as Scleromystax (Günther, 1864) with the designated type species of Scleromystax barbatus (Quoy & Gaimard, 1824). As of the latest update (Dias et al 2024), Scleromystax prionotos has been placed in Lineage 3 and has retained the genus name of Scleromystax. Aquarium Care: As with most members of the Callichthyidae they are peaceful. The Scleromystax genera are good additions to "cool water" aquarium set ups with maybe other cool water fish such as White Cloud Mountain Minnows and other fish that are comfortable with a temperature around the 70°f (21.5°c) mark. Diet: As with other members of the Corydoradinae they relish tablet and good quality flake food with frozen bloodworm a firm favourite. They are also keen on chopped earthworms and other worm foods such as white worm used sparingly, and grindal worm. Remarks: The coded species CW148 is very similar with a more rounded head.

False nattereri

Corydoras prionotus

Callichthyidae

South America: Coastal rivers in southeastern Brazil from Espirito Santo to São Paulo, Brazil. Type locality: Linhares, 19º22'S, 40º04'W, Lagoa Juparanã, Rio Doce system , Brazil.

Male: 6.0cm (2½ins) Female: 6.5cm (2¾ins)

21-25°C (69-77°F)

6.0-7.5.

Alexandrou, Markos & Taylor, Martin. (2011). Evolution, ecology and taxonomy of the Corydoradinae revisited.
Angelica C Dias, Luiz F C Tencatt, Fabio F Roxo, Gabriel de Souza da Costa Silva, Sérgio A Santos, Marcelo R Britto, Martin I Taylor, Claudio Oliveira, Phylogenomic analyses in the complex Neotropical subfamily Corydoradinae (Siluriformes: Callichthyidae) with a new classification based on morphological and molecular data, Zoological Journal of the Linnean Society, 2024;, zlae053.
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Fuller, Ian A.M. & Evers, Hans-Georg: Identifying Corydoradinae Catfish. 2005. 384 p.
Ian A. M. Fuller & Hans-Georg Evers (2011). Identifying Corydoradinae Catfish Supplement 1. Ian Fuller Enterprises.