Knodus borari, a new species from the lower Rio Tapajós basin (Characiformes: Characidae)

A new species of Knodus from the Rio Cupari, a right‐bank tributary of the lower Rio Tapajós, is described. Among its congeners, the new species shares exclusively with K. figueiredoi the presence of only uni‐tricuspid teeth in the premaxilla, maxilla and dentary. Knodus borari differs from K. figue...

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Bibliographic Details
Published inJournal of fish biology Vol. 103; no. 1; pp. 136 - 142
Main Authors Silva‐Oliveira, Cárlison, Colares Canto, André L., Ribeiro, Frank Raynner V.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.07.2023
Wiley Subscription Services, Inc
Subjects
Amazonian fishes
Animals
Basins
biodiversity
Brazil
Characidae - anatomy & histology
Characiformes - anatomy & histology
Colour
Congeners
Endemism
Knodus
Maxilla
New species
Physical characteristics
Rivers
Stevardiinae
taxonomy
Teeth
Tooth
Tributaries
Brazil
Amazonian fishes
biodiversity
endemism
taxonomy
Stevardiinae
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Summary:A new species of Knodus from the Rio Cupari, a right‐bank tributary of the lower Rio Tapajós, is described. Among its congeners, the new species shares exclusively with K. figueiredoi the presence of only uni‐tricuspid teeth in the premaxilla, maxilla and dentary. Knodus borari differs from K. figueiredoi by the colour pattern and morphological characteristics. The new species is the fifth species of the genus described from the Rio Tapajós basin, and the second restricted to the lower portion of the basin. This is additional evidence that the lower Rio Tapajós basin is a region of ichthyofaunal endemism.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0022-1112
1095-8649
DOI:10.1111/jfb.15422