Azraq Killifish

**Azraq Killifish (Aphanius sirhani)** The Azraq killifish is a small freshwater fish endemic to Jordan, measuring approximately 4-6 centimeters in length. Males display distinctive breeding coloration with blue-green flanks and dark vertical bars, while females remain more subdued in appearance. This species exhibits typical killifish behavior, feeding on small invertebrates, algae, and organic detritus while occupying shallow areas of its aquatic habitat. Originally found exclusively in the Azraq Oasis wetland system in eastern Jordan, this species inhabited freshwater springs, pools, and associated marshlands within the desert environment. The oasis historically supported a unique ecosystem where the killifish served as both predator of small invertebrates and prey for larger fish and birds. The primary threat to Aphanius sirhani stems from severe water extraction for agricultural and municipal use, which has dramatically reduced water levels in the Azraq Oasis. Over-pumping of groundwater has caused many springs to dry completely, while remaining water sources have become increasingly saline due to reduced freshwater input. Habitat degradation from human activities and infrastructure development has further compromised the species' limited range. Conservation efforts include habitat restoration projects aimed at rehabilitating parts of the Azraq wetland system and establishing captive breeding programs to maintain genetic diversity. The Royal Society for the Conservation of Nature in Jordan has been involved in monitoring and protection initiatives. The species' outlook remains precarious due to its extremely restricted range and ongoing water scarcity issues. Without significant improvements in water management and habitat restoration, the Azraq killifish faces potential extinction in the wild.