thayeri - after Thayer Expedition mid-19th century.
Synonyms
unknown
Length (total)
approx. 6 cm
Standard length (documented)
42.0 mm
Recommended tank size
60 cm
unnamed creek to rio Benevente near Guarapari, ➀ rio Paraíba do Sul = rio Parahyba, , córrego da Braúna, córrego Cachoeira Alta, rio Caco de Pote, rio Carangola, rio Dois Rios, córrego do Farol = rio São José das Torres, ribeirão das Flores, rio Floresta, córrego Limoeiro, poço da Mirindiba, unnamed creek to rio Muqui do Norte, rio Muriaé = rio Muriahé, rio Negro, unnamed creek to rio Norte, rio do Ouro, rio das Pedras, córrego Safra, ribeirão São Bartolomeu, rio São Domingos, córrego São Gabriel
Espírito Santo, Minas Gerais, Rio de Janeiro
Brazil
cachoeira Tororama ⇒ rio Benevente | rio Muqui do Sul → rio Itabapoana | (rio Muriaé | rio Grande | rio Piraí ⇒ rio Paraíba do Sul) | rio São Pedro → rio Macaé | rio Preto → rio Itabapoana | rio Itapemirim | rio Santa Joana → rio Doce | rio Sossego → rio Imbé → logoa de Cima → rio Ururaí → lagoa Feia → canal da Flecha | córrego São Cicente de Baixo → córrego Páu D'alho → rio Novo ⇒ Atlantic SE
[ -20.625,-40.618 ]
Nutrition (mostly): vegetarian
Eats plants
not known
Keeping in groups is necessary.
female higher-backed
unknown
 
absent
(4 -) 5 soft rays
(13 -) 14 (- 15) soft rays
slightly incised / concave, pointed
little longer at the bottom than at the top
(6 -) 7 soft rays
(5 -) 6 soft rays
(6 -) 5 soft rays
(4 -) 5 soft rays
(13 -) 14 (- 15) soft rays
slightly incised / concave, pointed
little longer at the bottom than at the top
(6 -) 7 soft rays
(5 -) 6 soft rays
(6 -) 5 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
- Martins, F.O. & Langeani, F., 2016 "Redescription of Hisonotus notatus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae), the type species of the genus, and description of a new species from coastal drainages of southeastern Brazil" (Neotropical Ichthyology, Vol 14 No. 2)
- Calegari, B.B.; Morlis, W.G. & Reis, R.E., 2017 "A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus" (Zootaxa, Vol. 4244, No. 2, P. 244)
Many thanks to
for the pictures
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=2446
2446
28.09.2025