It has long been considered doubtful that all populations represent a single species and the fish exhibit variations in colouration and patterning depending on locality; one subspecies already exists and it is likely that others will be named in the future. It is therefore important that the different forms be labelled with the collection details by aquarists and scientists in order to preserve bloodlines and maintain accuracy e. Habitat Found in numerous habitat types although it mostly inhabits shallow coastal waters such as lagoons and first order streams where submerged vegetation or filamentous algae grows thickly. It is highly adaptable and tolerant of a wide range of salinities from pure freshwater to hypersaline conditions. Unfortunately it is being outcompeted by Gambusia affinis and other introduced species across some parts of its range while habitat degradation and pollution continue to affect others; some populations have probably been wiped out already and studies suggest the situation is only likely to deteriorate in the future.

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Males of A. Females of A. The available molecular genetic data suggest that A. Zootaxa 3 Abstract: Two new species of Aphanius are described from the Kol drainage in southern Iran Aphanius darabensis n. Aphanius darabensis n. Aphanius kavirensis n. Our tree based on the cytochrome b data demonstrates that the Iranian inland and inland-related Aphanius species IIRAS form a monophyletic clade with three subclades A. The A. Aphanius vladykovi, together with A. Their divergences may have happened 10—5 m.

Aphanius farsicus, A. Males have 8—13 dark-brown lateral bars, of which the antepenultimate bar anterior to the caudal-fin base is 0. Females do not have vertical rows of dark-brown spots on caudal or anal fins, but numerous dark-brown spots on the flanks, arranged in 1—3 lateral rows behind a vertical from the dorsal-fin base.

Their dorsal fin is hyaline with tiny dark-brown spots on rays and membranes; pectoral fins, caudal and anal fins are hyaline, and one prominent large dark-brown blotch is situated in mid-lateral position on the hypural plate.

The new species is also distinguished by 11 fixed, diagnostic nucleotide substitutions in the mtDNA COI barcode region. Aphanius mesopotamicus Coad, A new record confirms the occurrence of Aphanius mesopotamicus Coad, , in southwestern Iran Actinopterygii: Cyprinodontidae.

This is the first report of successful collection of this species after its first collection in and futile efforts during the last three decades and after its original description based on those old museum specimens. Type locality: Eastern Czech Republic.

The study of the Cyprinodontid fishes collected in the spoil heaps of the Opava-Katerinky gypsum quarry has shown that they belong to the recent Mediterranean genus Aphanius Nardo. These fishes generally exhibit a more or less developed pachyostosis, already described in the Messinian Mediterranean species Aphanius crassicaudus Agassiz.

However, the Upper Badenian Aphanius from Opava-Katerinky differ from it by their smaller number of postabdominal vertebrae and also differ from every other Aphanius species hitherto described. For this reason, they are here described as Aphanius opavensis sp. Zootaxa No. The new species comes from the Saoura Valley in northwestern Algeria. Body pigmentation in live males consists of a profusely mottled blue and silver pattern, without vertical bars.

Females lack conspicuous black spots. The new species differs from both of its sister taxa Aphanius iberus and A. Genetic divergence between Aphanius iberus and Aphanius saourensis sp.


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