Megalancistrus parananus (L 234)
Peters, 1881
(Type species)
according to the origin Rio Paraná
Synonyms
Pterygoplichthys parananus
cascudo-abacaxi
cascudo-ouriço
cascudo-rosa
has Ancistrus gigas
has Chaetostomus aculeatus
has Chaetostomus gigas
has Megalancistrus aculeatus
has Megalancistrus gigas
Paraná-Riesenkaktuswels
Vieja del agua espinosa
Megalancistrus parananus (L 113)
cascudo-abacaxi
cascudo-ouriço
cascudo-rosa
has Ancistrus gigas
has Chaetostomus aculeatus
has Chaetostomus gigas
has Megalancistrus aculeatus
has Megalancistrus gigas
Paraná-Riesenkaktuswels
Vieja del agua espinosa
Megalancistrus parananus (L 113)
least concern
Length (total)
approx. 80 cm
Standard length (documented)
588.0 mm
Recommended tank size
300 cm
Temperature
20 - 27 °C
pH
6.0 - 8.0
Altó Paraná, Itapúa, Misiones, Ñeembucú, Central, Cordillera, San Pedro, Concepción, Presidente Hayes, Rio Grande do Sul, Iguaçu, Paraná, Formosa, Chaco, Santa Fe, Entre Rios, Corrientes, Artigas, Salto, Paysandú, Rio Negro, Entre Rios, Soriano
Argentinia, Brazil, Paraguay, Uruguay
río Paraná ⇒ río de la Plata ➙ Atlantic SE
Nutrition (mostly): carnivore
Eats plants
not known
Keeping in (small) groups is recommended. Individual keeping is possible.
from genus: look to head and body shape
unknown
I / 5 rays
slightly convex - later slightly incised / concave, pointed
little longer at the bottom than at the top
dark dots
I / 11 rays
6 soft rays
5 soft rays
slightly convex - later slightly incised / concave, pointed
little longer at the bottom than at the top
dark dots
I / 11 rays
6 soft rays
5 soft rays
Sympatric with
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
- Reis, R.E., Kullander, S.O. & Ferraris, C.J. et.al., 2003 "Check List of the Freshwater Fishes of South and Central America" P. 390
- I. Seidel / H.-G. Evers "Welsatlas 2" edition: 1 (2005) P.66
- Seidel, Ingo "Back to Nature - Handbuch für L-Welse" edition: 1 (2008) P.142
- A. Werner / W. Lechner / Dr. J. Schmidt "Miniatlas L-Welse" edition: 1 (2005) P.203
- Kaluza, Markus: "Megalancistrus parananus – Riesen zwischen den Staudämmen"
(DATZ Februar / März 2023)
- Peters, W., 1881 "Mitteilung über vier neue Fische" (Sitzungsbericht der Gesellschaft naturforschender Freunde zu Berlin)
- Boulenger, G.A., 1895 "Fishes from Matto Grosso and Paraguay" (Proceedings of the Zoological Society of London, Vol. 4, P. 526)
- Isbrücker, I.J.H., 1980 "Classification and catalogue of the mailed Loricariidae (Pisces, Siluriformes)" (Verslagen en technische Gegevens. Instituut voor Taxonomische Zoölogie, No. 22, P. 42)
- Stawikowski, Rainer, 1992 "Harnischwelse aus Brasilien" (DATZ, 10)
- Schäfer, Claus, 1996 "Welse aus der Eifel" (DATZ, 11)
- López, H.L.; Miquelarena,A.M. & Menni, R.C., 2003 "Lista comentada de los peces continentales de la Argentina" (ProBiota, Serie Técnica y Didáctica, No. 5, P. 53)
- Galves, W.; Shibatta, O.A. & Jerep, F.C., 2007 "Fish, Taquara river basin, northern of the state of Paraná, Brazil" (CheckList, Vol. 3 No. 3, P. 257)
- Ferraris, C.J. jr., 2007 "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types (I)" (Zootaxa, Vol. 1418, P. 272)
- Diehl, K., 2007 "Megalancistrus parananus L 234" (Fischarchiv Aquarium Glaser)
- Mello, F.T. de; González-Bergonzoni, I. & Loureiro, M., 2011 "Peces de Agua Dulce del Uruguay"
- Schäfer, F., 2014 "L234 Megalancistrus sp. Rio Urguayo" (Newsletter Fa. Glaser)
- 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)
- Nión, H.; Rios, C. & Meneses, P., 2016 "Peces del Uruguay - Lista sistemática y nombres comunes"
- 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. 75)
- Gimênes Junior, H. & Rech, R. , 2022 "Guia ilustrado dos peixes do Pantanal e entorno"
- Dagosta,F.C; Monção,M.S; Nagamatsu,B.A; Pavanelli,C.S; Carvalho,F.R; Lima,F,C.T; Langeani,F; Dutra,G.M; Ota, R.R; Seren,T.J; Tagliacollo,V; Menezes, N.A; Britski,H.A & Pinna M, 2024 "Fishes of the upper rio Paraná basin: diversity, biogeography and conservation" (Neotropical Ichthyology, Vol. 22 No. 1)
- Malabarba, L.R.;Hirschmann,A.; Lucena,C.A.S. de; Giora,J.; Wingert,J.M.; Ferrer,J.; Silva,P.C ; Angrizani,R.C.; Costa Ramos,R. da; Kullander,S.; Carvalho,T.P.; Bertaco,V.; Fialho,C.B. & Bonato,K.O., 2025 "Guia Peixes do Bioma Pampa"
- PCF
Many thanks to
for the pictures
Sandra Udrizar
1, 2, 3
Please help with your pictures and information to complete the database: database(at)welsfans.de
Link: https://www.suedamerikafans.de/en/wels-datenbank/welsart/?art=325
325
30.09.2025