Abstract:

Parasitic infestations represent one of the main challenges to fresh water and marine fish all areas of the world. The infections are commonly found on the skin and gills of fish and can cause dangerous problems, as mortality, in heavily parasitized infections. This study was conducted to detect of ectoparasite types in Fishes, 200 of Coptodon zillii from Euphrates and 120 Cyprinus carpio from Razzaza Lake, were used for this study in aquatic environment. The specimens were purchased at 2022 in different periods from market and selected. The collection of fish using gill nets. The collected of fish samples was carried out in lab and used macroscopic inspection, gross viscera, microscopic exam-wet mount of fins, skin, gills and eyes. The results of the both infected fishes revealed the presence of several clinical signs. The prevalence was 65.6%, in Coptodon zillii was 30% and Cyprinus carpio was 100%. Indeed, we observed the appearance of necrotic areas, ulcerations and hemorrhage on the gills. On others body parts, we found Protozoa and Monogeneans parasites. The identification of ectoparasite were obtained in fins, skin, and gills and no infection in eyes. There are 4 types of ectoparasites were infect to Coptodon zillii, that is Trichodina sp., Ichthyophthirius multifiliis sp., Dactylogyrus sp., and Gyrodactylus sp. While, Cyprinus carpio that is I. multifiliis and Gyrodactylus sp. Significantly of results at P≤0.05 of fish type with weight and long but not significant for genders in both types. In future studies should be focusing on modern tools to identification of parasites species in different environments.

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