Anggun Satrisno, Panji2013-01-142013-01-142013-01-14sumarnihttp://repository.unri.ac.id:80/handle/123456789/1344Siak River is one of the most polluted river in Riau and its low water quality may negatively affects the healt status of fish that inhabit that river. The Kampar River in contrast, is in good condition. To understand blood condition of C. batracus living in both rivers, this study was conducted. Totally 6 fishes from Siak and 8 fishes from Kampar were studied. Blood was obtained from vena caudalis and then was checked for the number of erytrocyte and leukocyte numbers, hematocrite and leucocrite levels and type of leuklocyte was studied. Leukocyte type was studied by smearing blood in the slide glass and stained with Giemsa. Results shown that the condition of blood of fish from both study sites was not signigicantly different. The number of eritrocyte and leucocyte of fish from the Siak River was 2,775,833 (hematocrite level 25.93%) and 276,750. (leukocrite level 29.72%)., while those of the Kampar River was 2,031,250 and 130,813. Types of leukocyte present in fish from both sampling areas also similar, there are monosit, limfosit, trombosit, and netrofil.otherKamparSiak riverclarias batracusabnormalityGillKidneystudent Paper Post Degree