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Investigation of ectoparasitic infections in two ornamental fish species of Pangasiidae offered for sale in Tehran, Iran
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Hooman Rahmati Holasoo   , Hossein Ali Ebrahimzadeh Mosavi , Maryam Sadat Mirdamadi , Mohammadreza Heidari |
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Abstract: (2 Views) |
Ornamental fish have considerable economic value and play an important role in the aquaculture industry. Therefore, identifying disease-causing agents, particularly parasites, is important for effective health management. This study aimed to identify ectoparasites in two ornamental fish species belonging to the family Pangasiidae. For this purpose, 250 fish were randomly collected from 10 ornamental fish retail outlets in Tehran, Iran, and transported alive to the Aquatic Animal Diseases Laboratory of the Faculty of Veterinary Medicine. Wet mounts prepared from skin and gill samples were examined microscopically, and the observed parasites were identified using standard taxonomic keys. Out of a total of 250 fish examined, 85 (34%) were infested with external parasites. Among the 60 Pangasianodon hypophthalmus, 35 fish (58.3%) were infested with external parasites, while 50 fish (26.31%) of the 190 Pangasius sanitwongsei were similarly infested. The highest and lowest prevalence rates of parasites observed across the fish species were associated with Ichthyophthirius multifiliis (23.68%) and Thaparocleidus sp. (2.63%), respectively. Furthermore, Trichodina sp. had the highest prevalence in Pangasianodon hypophthalmus, whereas Ichthyophthirius multifiliis was the most prevalent parasite in Pangasius sanitwongsei. These findings demonstrate the occurrence of ectoparasitic infections among the examined fish and highlight the importance of parasite surveillance and appropriate hygiene practices in ornamental fish retail facilities.
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| Keywords: Ornamental fish, Pangasiidae, Ectoparasites, Infection prevalence, Aquatic parasitology |
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Full-Text [PDF 786 kb]
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Type of Study: Research |
Subject:
Special
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