Oligancistrus zuanoni/Spectracanthicus zuanoni (L 20)
Chamon & Rapp Py-Daniel, 2014
dedicated Jansen Zuanon
Synonyms
acari bola branca (BRA)
Graugefleckter Segelflossenharnischwels
Grey-spotted sail-fin pleco
Oligancistrus sp. "L 20"
Spectracanthicus sp. "L 20"
Oligancistrus zuanoni (L 354)
Graugefleckter Segelflossenharnischwels
Grey-spotted sail-fin pleco
Oligancistrus sp. "L 20"
Spectracanthicus sp. "L 20"
Oligancistrus zuanoni (L 354)
Length (total)
approx. 13 cm
Standard length (documented)
129.0 mm
Recommended tank size
100 cm
Temperature
26 - 30 °C
pH
5.0 - 7.0
(Prefered) River depth
< 2.00 m
Locality
under stones
Type of water
Clear water
Flow
strong
Substrate
rocks
Nutrition (mostly): omnivore
periphyton (Periphyton)
Eats plants
not known
Keeping in (small) groups is recommended. Individual keeping is possible.
Sex difference
from genus: Standard
unknown
present
I / 4 rays
14 soft rays
slightly incised / concave, pointed
little longer at the bottom than at the top
I / 7 rays
Connected with adipose
bright dots
6 soft rays
5 soft rays
I / 4 rays
14 soft rays
slightly incised / concave, pointed
little longer at the bottom than at the top
I / 7 rays
Connected with adipose
bright dots
6 soft rays
5 soft rays
Sympatric with
Oligancistrus punctatissimus
Parancistrus nudiventris (L 31 / LDA 4)
Peckoltia (cf.) vittata "L 15"
Ancistrus sp.
Pseudancistrus sp. aff. barbatus
Parancistrus nudiventris (L 31 / LDA 4)
Peckoltia (cf.) vittata "L 15"
Ancistrus sp.
Pseudancistrus sp. aff. barbatus
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
- I. Seidel / H.-G. Evers "Welsatlas 2" edition: 1 (2005) P.824
- Seidel, Ingo "Back to Nature - Handbuch für L-Welse" edition: 1 (2008) P.144
- A. Werner / W. Lechner / Dr. J. Schmidt "Miniatlas L-Welse" edition: 1 (2005) P.23
- Perez, Mark Sabaj: "Neuigkeiten vom Rio Xingu"
(Amazonas Januar / Februar 2013 - "Wels-Presseschau") - Konn-Vetterlein, Daniel: "Neues bei den Harnischwelsen"
(Amazonas Juli/August 2014 - "Wels-Presseschau") - Seidel, Ingo: "Taxonomische Revision der Gattung Spectracanticus"
(BSSW-Report 2/2014 – “Wels-Presseschau”) - Schäfer, Frank: "L-Nummern und Oligancistrus aufgelöst"
(DATZ 12/2014 - "Wels-Presseschau") - Konn-Vetterlein, Daniel: "Betrifft: ‘L-Nummern und Oligancistrus aufgelöst’"
(DATZ 02/2015 - "Wels-Presseschau")
- Chamon, C.C. & Rapp Py-Daniel, L.H., 2014 "Taxonomic revision of Spectracanthicus Nijssen & Isbrücker (Loricariidae: Hypostominae: Ancistrini), with description of three new species" (Neotropical Ichthyology, Vol. 12 No. 1)
- Stawikowski, Rainer, 1988 "Harnischwelse aus dem Rio Xingú" (DATZ, 3)
- Lujan, N.K.; Meza-Vargas, V.; Astudillo-Clavijo, V. & ´López-Fernández, H., 2015 "A Multilocus Molecular Phylogeny for Chaetostoma Clade Genera and Species with a Review of Chaetostoma (Siluriformes: Loricariidae) from the Central Andes" (Copeia, Vol. 103 No. 3, P. 279)
- Fitzgeralda, D.B.;Sabaj Perez, M.H.; Sousa, L.M.; Gonçalves, A.P.; Rapp Py-Daniel, L.; Lujan, N.K.; Zuanon, J.; Winemiller, K.O. & Lundberg, J.G., 2018 "Diversity and community structure of rapids-dwelling fishes of the Xingu River: Implications for conservation amid large-scale hydroelectric development" (Biological Conservation, Vol. 222, P. 107)
- Chamon, C.C.; Pereira, T.N.A.; Mendonça, M.B. & Akama, A. , 2018 "New species of the genus Spectracanthicus (Loricariidae, Hypostominae, Ancistrini) from the Rio Javaés (Rio Araguaia basin), with a description of gross brain morphology" (Journal of Fish Biology)
- PCF
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Many thanks to
for the pictures
Ingo Seidel
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=105
105
28.09.2025