Austrolebias reicherti (Loureiro & Garcia, 2004)

Loureiro, Marcelo & García, Graciela, 2008, Austrolebias reicherti Loureiro & García, a valid species of annual fish (Cyprinodontiformes: Rivulidae) from Uruguay, Zootaxa 1940, pp. 1-15 : 4-6

Austrolebias reicherti vs A. charrua

From the comparative data in Table 1, several morphological differences can be noted between these species: 1) Austrolebias reicherti males have the origin of the dorsal fin anterior to the origin of the anal fin, whereas the dorsal fin of A. charrua originates posterior to the anal fin, 2) the number of caudal fin rays in A. reicherti range from 18 to 24 and in A. charrua they range from 23 to 26, 3) males of A. reicherti have a well developed supraorbital band while in A. charrua this band is moderately developed, 4) a characteristic vertical band is present on the posterior border of the dorsal and anal fins of A. reicherti males, but it is absent in A. charrua , 5) males of A. reicherti have bars on the base of the dorsal fin and the annals fin is uniformly pigmented, in males of A. charrua both fins are proximally or entirely dotted, and 6) males of A. reicherti have vertical black bands on body flanks that are narrower or equal in width to the space between those bars, the vertical bands are as wide or wider than the space between the bands in males of A. charrua .

Geometric morphometry analysis indicates that both species also differ in males body shape ( Fig. 2). Differences are mostly in body depth ( A. charrua deeper) and head size ( A. charrua smaller head).