Results for “species richness”

This species is very rare in the aquarium trade but available on occasion. It has 8-9 darkish body bars which usually split vertically as the fish mature, and like some conspecifics possesses a prominent dorsal adipose crest on the caudal peduncle. Schistura is the most species-rich genus among...

The identity of this fish is unclear but it has been traded as S. sp. 'Laos redtail'. Schistura is the most species-rich genus among nemacheilid loaches with some 190 members and it continues to grow with over 100 having been described since 1990. It may repre...

This fish was collected for the aquarium trade during 2012 but its identity has not yet been established. Schistura is the most species-rich genus among nemacheilid loaches with some 190 members and it continues to grow with over 100 having be...

This species has something of a confused history having been previously been considered synonymous with both A. sophiae (a separate species native to Iraq and Iran) and A. cypris (currently considered a junior synonym of A. mento). Although some populations occur close to and even sympatric with other members of the genus in Turkey phylogenetic studies have shown it to be more closely-related to the Middle Eastern species A. dispar dispar, A. d. richardsoni, A. ginaonis and A. sirhani. It's...

Phylogenetic studies have shown this species to be most closely related to A. dispar, A. richardsoni and A. ginaonis within the genus. It probably became isolated when the Red Sea flooded the Wadi Sirhan around 13 million years ago. You 're unlikely to find it on sale in aquatic stores although it may be available via specialist breeders or associations from time-to-time. While Aphanius spp. are certainly not as colourful as some of their relatives their interesting behaviour and continuous acti...

A. dispar should only be considered a nominal species as demonstrated by Hrbek and Meyer (2003) who conducted an in-depth phylogenetic study covering the majority of the genus. It was found to represent a paraphyletic grouping meaning it cannot be considered to be a species following the phylogenetic species concept. A. mento, A. sirhani and especially A. ginaonis and A. richardsoni were found to be its closest surviving relatives. Hoedeman (1951) suggested that it should be moved into a separat...

A single male of the Tequila Splitfin was sampled in 1955 by Miller and Greenbank, but identified erroneously as Zoogoneticus quitzeoensis, with which species it was collected and found sympatrically . Many years later, the mistake was detected, the fish identified as a new species and finally, 43 years after the first capture, described by Webb and Miller. In 2001, a wild population of this species was rediscovered in a very small spring pool (3 x 4m in diameter). The population there was composed of only a handful of adult fish and a few tens of juveniles (De la Vega-Salazar et al., 2003). In 2007, N. W. Bailey et al showed, that the allelic richness of this population (though it was comparable in size to an aquatic stock) was higher than in any aquatic stock. In 2013 the loss of this population was reported (pers. comm. Domínguez), so there is not much hope that this species is still persisting in the wild.