Alburnus istanbulensis

Alburnus istanbulensis is a freshwater fish of the carp family fish. It was originally considered a subspecies of Mairenke ( Alburnus chalcoides ) and occurs in Turkey.

Features

Alburnus istanbulensis reached a standard length of 226 millimeters. The number of scales on the lateral line is 60 to 68 There are 13 to 15 ½ branched Analflossenstrahlen. The starting point of Analflossenstrahlen was ½ to 1 ½ shed behind the base of the last Dorsalflossenstrahls. The basis of the paired fins is translucent or gray in the spawning females ( spawners ). The number of gill rakers is 24 to 35 The length of gill rakers on the angle of the upper and lower limbs of the first gill arch 30 to 55 percent of the over -hanging Kiemenfilamente. The Ventralkiel shows eight to twelve scales in front of the anus.

Occurrence

The distribution area extends from Karasu in Eastern Thrace on the Marmara Sea to the Black Sea Papuc in Turkey. Known sites are the Sapanca Lake, Durusu Lake and the rivers Kâathane, Darboğaz and Yıldız on the Bosporus.

Habitat and behavior

Alburnus istanbulensis inhabited flowing and standing water. During the spawning season the type migrates to the upper portions of the tributaries. Eggs are laid in rapids with strong currents on the gravel base. The search for food is near the surface in the lower regions of rivers.