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Siluriformes (Catfishes) >
Callichthyidae (Callichthyid armored catfishes) > Corydoradinae
Etymology: rikbaktsa: the Rikbaktsa (also known as Rikbakta or Erikbaktsa), a Jê-speaking indian nation, who formerly inhabited the area between the rio Juruena and rio Aripuanã in northern Mato Grosso.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce demersal; rango de profundidad 0 - 2 m (Ref. 138446). Tropical
South America: Brazil.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 3.8 cm SL macho / no sexado; (Ref. 138446); 3.7 cm SL (female)
Descripción breve
Claves de identificación | Morfología | Morfometría
This species is distinguished by the following characters: with a distinct broad vertical bar on head, at the level of the eye (mask) and an overall light background color, without large blotches or stripes on body or fins; with two to four blotches along the midline, and a broad vertical bar on head narrower at the level of the eye and extending over the entire opercle; posterior margin of pectoral-fin spine with serrations directed towards the tip of the spine (Ref. 138446).
Body shape (shape guide): fusiform / normal; Cross section: angular.
The type-locality (rio Juininha), is a clearwater river with sandy banks while at the rio Papagaio basin, the rio Buriti, is a mid-sized clearwater river (approximately 6–8 meters wide, > 2.0 meters deep at the deepest portions) with strong current in its channel, near its mouth with the rio Papagaio. The species was exclusively collected at this site along a small, shallow sandy shore (Ref. 138446).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Lima, F.C.T. and M.R. Britto, 2020. A new Corydoras (Ostariophysi: Siluriformes: Callichthyidae) with an unusual sexual dimorphism from the rio Juruena basin, Brazil. Zootaxa 4742(3):518-530. (Ref. 138446)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Herramientas
Informes especiales
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Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01820 (0.00782 - 0.04232), b=3.02 (2.82 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.0 ±0.4 se; based on size and trophs of closest relatives |
Resiliencia (Referencia 120179) |
Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.). |
Vulnerabilidad pesquera (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |