Detection of parasite in common snakehead (Channa Striata ) in paddy fields, Bachok, Kelantan.

Parasitic infections in wild freshwater fish can serve as important indicators of environmental health and aquaculture-related disease risks. This study investigated the occurrence of ecto- and endoparasites in the common snakehead ( Channa striata ) collected from paddy field ecosystems in Bachok, Kelantan. A total of 20 fish were examined using standard parasitological procedures, including skin scrapings and gill examinations for ectoparasites, followed by organ dissection for endoparasite detection. Only one case of ectoparasitic infection was observed, identified as Trichodina sp. In contrast, endoparasite prevalence was comparatively higher: 35% of the fish harboured acanthocephalans, 25% were infected with trematodes, and one fish exhibited nematode infestation. These findings suggest that Channa striata inhabiting paddy field environments are predominantly affected by gastrointestinal parasites, while ectoparasitic burdens appear minimal. The parasite profiles observed in this study highlight the need for continued monitoring of wild fish populations in agro-ecosystems to better understand parasite transmission dynamics and potential implications for local aquaculture and food safety.