Trachydoras paraguayensis
Eigenmann & Ward, 1907
according to the origin río Paraguay
Synonyms
Roque-roque
armadinho
armado (ARG, PAR)
Hemidoras paraguayensis
Panzerdornwels
rique-rique (BRA)
armadinho
armado (ARG, PAR)
Hemidoras paraguayensis
Panzerdornwels
rique-rique (BRA)
Length (total)
approx. 25 cm
Standard length (documented)
192.0 mm
Recommended tank size
150 cm
Weight
0.181 kg
Amazonas, Mato Grosso do Sul, Rondônia, Misiones, Formosa, Beni, Alto Paraguay, Presidente Hayes, Concepción, San Pedro, Cordillera, Asunción, Central, Ñeembucú
Argentina, Bolivia, Brazil, Paraguay
río Salado → río Paraguay ⇒ río Paraná → río de la Plata → Atlantic SE ↓ río Mamoré → rio Madeira → Amazonas → Atlantic NE ↓
˜[ -18.993,-57.647 ]
Substrate
sand, mud
Eats plants
not known
unknown
(5 -) 9 - 11 soft rays
7 + 8 soft rays
greatly incised / concave, pointed
little longer at the bottom than at the top
II / 6 rays
7 - 8 (- 9) soft rays
6 soft rays
7 + 8 soft rays
greatly incised / concave, pointed
little longer at the bottom than at the top
II / 6 rays
7 - 8 (- 9) soft rays
6 soft rays
Not on the positive list of Brazil in 2012 : The positive list of Brazil
Not on the negative list of Brazil from 2020 : The negative list of Brazil
Not on the negative list of Brazil from 2020 : The negative list of Brazil
last seen on a
german stock list
german stock list
08/October/2014
- Eigenmann, C.H., 1907 "On Further Collections Of Fishes From Paraguay" (Annals of the Carnegie Museum, Vol. 4, P. 116)
- Silva, V.F.B. da; Bailly, D.; Gubiani, É.A.; Costa, F.E.S.; Ameida, V.L.L. de & Liparelli, T., 2014 "Length–weight relationships for freshwater fish species from the Pantanal of the Negro River, Brazil " (Journal of Applied Ichthyology, Vol. 31 No. 1)
- Frota, A.; Carvalho Deprá, G. de; Petenucci, L.M. & Graça, W.J. da, 2016 "Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil" (Biota Neotropica, Vol. 16 No. 3, P. 6)
- Sabaj, Mark H. & Arce Hernández, Mariangeles, 2017 "Taxonomic assessment of the Hard-Nosed Thornycats (Siluriformes: Doradidae: Trachydoras Eigenmann 1925) with description of Trachydoras gepharti, n. sp." (Proceedings of the Academy of Natural Sciences of Philadelphia, No. 166, P. 1)
- Ota, R.R.; Carvalho Deprá, G. de; Graça, W.J. da & Pavanelli, C.S., 2018 "Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated" (Neotropical Ichthyology, Vol. 16 No. 2)
- Ota, R.R.; Carvalho Deprá, G. de; Graça, W.J. da & Pavanelli, C.S., 2018 "Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated" (Neotropical Ichthyology, Vol. 16 No. 2, P. 67)
- Muniz, C.C.; Mendes; E.F.; Souza Campos, D.V. de & Oliveira Junior, E.S., 2021 "Peixes que encantam no Pantanal" (Bichos do Pantanal)
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Many thanks to
for the pictures
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1652