تسجيل جديد لنوعين دخيلين من أسماك البلطي oreochromis aureus (steindacher, 1864)‎ tilapia zilli (gervais, 1848)‎ من الجزء الجنوبي للمصب العام عند مدينة البصرة

الملخص EN

Two exotic cichlids fish Oreochromis aureus and Tilapia zilli were recorded for the first time in the south of Iraq.

Fish samples were collected from the main outfall drain (Al-Dabab area) in Basrah city by fixed gill net during the period from June to August 2009.

Total length ranged from 100-120 mm of O.

auraus and ranged from 105-160 mm of T.

zilli.

Fish were identified depending on the meristic and morphometric characters.

Body depth ranged from 44.7-50.07 % of standard length in O.

auraus and 42.8-47.46 % in T.

zilli, number of scales in the lateral line ranged from 30-31 in O.

auraus and 30-33 in T.

zilli, gill rakers were 22 in O.

aureus and 13 in T.

zilli, lower jaw have 3-4 rows of teeth in O.

auraus and 5-6 rows in T.

zilli.