2009年6月18日 星期四

巴西塔巴赫斯流域下游產麗脂鯉屬之一種

文獻來源: Marinho, M.M.F. & Lima, F.C.T. (2009): Astyanax ajuricaba: a new species from the Amazon basin in Brazil (Characiformes: Characidae). Neotropical Ichthyology, 7 (2): 169-174. [全文連結]

Abstract
A new Astyanax species is described from several localities in the rio Negro, rio Solimões and lower rio Tapajós basins, Amazon basin, Brazil. The new species is distinguished from all remaining characids by its unique color pattern consisting of the combination of presence of a conspicuous, narrow dark midlateral stripe, a well-developed vertically-elongated dark humeral spot, and upper caudal-fin lobe and middle caudal-fin rays dark, with a rounded clear ocellated spot present at anterior third of caudal-fin lobe.