Antalya bleak Antalya bleak The Antalya bleak ("Alburnus baliki") is a species of ray-finned fish in the genus "Alburnus". It is endemic to Turkey and is commonly found in schools in clear, vegetated fresh water. The Antalya bleak is similar in appearance to other members of its genus, "Alburnus". In addition, it has 12 dorsal rays, 16-18 anal rays and 36-38 vertebra. The longest known specimen was 6.1 cm long. it is only known from Turkey and was discovered in 2000 in the Manavgat River system. Shoals of the fish were found near the surface along the river's banks, where the current
Common species because common species shape ecosystems, contribute disproportionately to ecosystem functioning, and can show rapid population declines, conservation should look more closely at how the trade-off between species extinctions and the depletion of populations. Common species Common species and uncommon species are designations used in ecology to describe the population status of a species. Commonness is closely related to abundance. Abundance refers to the frequency with which a species is found in controlled samples; in contrast, species are defined as common or uncommon based on their overall presence in the environment. A species may be locally abundant without being common. However,