Peer-reviewed veterinary case report
Flavobacterium columnare infection in ornamental goldfish ulcers
By Verma, Dev Kumar et al.·Published in Journal of environmental biology·2015·View original on PubMed →
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Original publication title: Isolation and characterization of Flavobacterium columnare from freshwater ornamental goldfish Carassius auratus.
- Species:
- fish
Plain-English summary
A goldfish was found to have a serious skin issue, showing ulcerated areas and a saddleback appearance, which is a sign of illness. Tests revealed that the problem was caused by a type of bacteria called Flavobacterium columnare. This bacteria is known to cause columnaris disease, which can lead to severe health problems in fish. The findings are important as they document this bacteria affecting goldfish for the first time in India. Treatment options for infected fish typically include antibiotics and improving water quality to help them recover.
People also search for: goldfish skin problems · Flavobacterium columnare treatment · goldfish ulcer care
Abstract
Filamentous bacteria overlaying ulcerated area on the body surface were observed in the wet-mout preparation from a moribund goldfish with saddle back appearance. The causative agent was identified as Flavobacterium columnrae, on the basis of biochemical test, species-specific polymerase chain reaction (PCR) and sequencing of 16S rDNA gene with the universal bacterial primers. Furthermore, the strain (ING-1) attributed to genomovar II in 16S rDNA PCR-restriction fragment length polymorphism (PCR-RFLP) and sequence analysis. In phylogenetic analysis, the strain ING-1, produced typical columnaris disease symptoms in rohu (Labeo rohita) fingerlings within 10 days. This is a new record about molecular detection and identification of Flavobacterium columnare, occurring naturally on a new host Carassius auratusin India.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/25895267/