The discovery and describing of a new species of tetra is not anything particularly remarkable these days, as new species are being regularly discovered though it takes months for most to be described due to the numbers and "too few" ichthyologists. I'm posting this paper though because of (1) the pertinent observations made by the authors concerning this species, which for reasons outlined in the paper they recommend be declared "Near Threatened" on the IUCN's Red List of species, and (2) an interesting discussion on the developmental truncation of the lateral-line canals.
Marinho MMF, Ohara WM, and Dagosta FCP, "A new species of Moenkhausia (Characiformes: Characidae) from the rio Madeira basin, Brazil, with comments on the evolution and development of the trunk lateral line system in characids," Neotropical Ichthyology, 2021; 19(2):e200118.
The sad fact that this species may never be seen in any of our aquaria reminds me of Sir David Attenborough's comment on how regrettable it is that so many species will become extinct before we have even discovered them.
The first link is to the article in the current edition of
Amazonas, and the second to the scientific paper which has additional photos and a map.
Scientists have discovered and described an attractive new yellow tetra originating from the upper Rio Machado in Brazil. However, a limited range and
www.reef2rainforest.com
Abstract A new species of Moenkhausia is described from the rio Machado drainage, Amazon basin,...
www.scielo.br