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Stream/Area:
-
Subject:
-
Paper ID:
IJSREM68434
Volume:
10 |
10 |
Oct 2026
Pages:
1-7
Publication Frequency:
Monthly (12 issues per year)
License:International Journal of Scientific Research in Engineering and Management follows the Creative Commons Attribution 4.0 (CC BY 4.0) License, allowing free use and distribution with proper attribution.
Department of Zoology
Mahatma Basweshwar College, Latur, Maharashtra, India
Department of Zoology
Mahatma Basweshwar College, Latur, Maharashtra, India
Ornamental fish production and retail trade may facilitate the circulation of opportunistic bacterial pathogens, particularly when fish are held at high densities or exposed to suboptimal water quality and handling conditions. This study document reports bacteriological findings from 100 ornamental fish representing goldfish (Carassius auratus), guppy (Poecilia reticulata), angelfish (Pterophyllum scalare), fighter fish (Betta splendens), and molly (Poecilia sphenops) sampled from aquarium retail outlets and local breeding units in Latur District, Maharashtra, India. Bacterial growth was reported for 75 of 100 fish (75.0%). Four bacterial groups were reported among the positive samples: Aeromonas hydrophila (28 isolates; 37.3%), Pseudomonas aeruginosa (20; 26.7%), Flavobacterium columnare (16; 21.3%), and Vibrio cholerae non-O1/non-O139 (11; 14.7%). Disk-diffusion results for 75 isolates indicated the highest reported resistance to ampicillin (73.3%), followed by oxytetracycline (48.0%). Susceptibility was reported as 82.7% for gentamicin and 76.0% for ciprofloxacin. Thirty-two isolates (42.7%) were classified as multidrug-resistant (MDR), defined in the supplied dataset as resistance to at least three tested antimicrobial classes. Pseudomonas aeruginosa showed the highest pathogen-specific MDR proportion (60.0%).
KEYWORDS
This study record describes bacterial recovery from 75 of 100 ornamental fish sampled in Latur District and identifies Aeromonas hydrophila as the most frequently reported taxon, followed by Pseudomonas aeruginosa, Flavobacterium columnare, and Vibrio cholerae non-O1/non-O139. The supplied antimicrobial results show the greatest reported resistance to ampicillin and oxytetracycline, while 32 of 75 isolates were classified as multidrug-resistant. Pseudomonas aeruginosa showed the highest reported MDR proportion among the four taxa. These findings provide a preliminary local dataset that supports continued bacteriological surveillance and improved husbandry practices in ornamental-fish retail and breeding systems.
Clinical and Laboratory Standards Institute (CLSI). (2020a). Methods for Antimicrobial Broth Dilution and Disk Diffusion Susceptibility Testing of Bacteria Isolated From Aquatic Animals (2nd ed.; CLSI guideline VET03). Wayne, PA: CLSI. https://clsi.org/shop/standards/vet03/ Clinical and Laboratory Standards Institute (CLSI). (2020b). Performance Standards for Antimicrobial Susceptibility Testing of Bacteria Isolated From Aquatic Animals (3rd ed.; CLSI supplement VET04). Wayne, PA: CLSI. https://clsi.org/shop/standards/vet04/ Hossain, S., & Heo, G.-J. (2021). Ornamental fish: a potential source of pathogenic and multidrug-resistant motile Aeromonas spp. Letters in Applied Microbiology, 72(1), 2–12. https://doi.org/10.1111/lam.13373 Preena, P. G., Arathi, D., Sundar Raj, N., Arun Kumar, T. V., Arun Raja, S., Reshma, R. N., & Raja Swaminathan, T. (2020). Diversity of antimicrobial-resistant pathogens from a freshwater ornamental fish farm. Letters in Applied Microbiology, 71(1), 108–116. https://doi.org/10.1111/lam.13231 Verner-Jeffreys, D. W., Welch, T. J., Schwarz, T., Pond, M. J., Woodward, M. J., Haig, S. J., Rimmer, G. S. E., Roberts, E., Morrison, V., & Baker-Austin, C. (2009). High prevalence of multidrug-tolerant bacteria and associated antimicrobial resistance genes isolated from ornamental fish and their carriage water. PLoS ONE, 4(12), e8388. https://doi.org/10.1371/journal.pone.0008388 Oliveira, C. H. de, Moreno, L. Z., Cardoso, P. H. M., Silva, A. P. S., Gomes, V. T. M., Barbosa, M. R. F., Balian, S. C., & Moreno, A. M. (2024). Characterization of Aeromonas isolates from ornamental fish: species, virulence genes, and antimicrobial susceptibility. Microorganisms, 12(1), 176. https://doi.org/10.3390/microorganisms12010176
Publication Date
10/29/2026
Peer Review Type
Double-Blind Peer Review
Review Rounds: 2
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