Difference between revisions of "Ornamental Fish Q&A 13"
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Nitrite toxicity, probably secondary to destruction of the biological filter with the administrations of antibiotics directly in the tank water. | Nitrite toxicity, probably secondary to destruction of the biological filter with the administrations of antibiotics directly in the tank water. | ||
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A 23-gauge butterfly catheter was used to remove 160 cm3 of air from the swim bladder and the fish was able to right itself. It is not known what caused this swim bladder condition. | A 23-gauge butterfly catheter was used to remove 160 cm3 of air from the swim bladder and the fish was able to right itself. It is not known what caused this swim bladder condition. | ||
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Latest revision as of 22:30, 30 October 2011
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This question was provided by Manson Publishing as part of the OVAL Project. See more Ornamental Fish Q&A. |
A four-year-old redtail catfish kept in a 530-L tank began to develop mild fin necrosis about six weeks ago. The owner has treated the fish with antibiotics, first with a two-week course of tetracycline added to the water at 400 p.p.m. and then a kanamycin water treatment for the entire tank at 100 p.p.m. A day after the kanamycin treatment, the redtail catfish was found on its back with a swollen abdomen. You conduct water analysis of the tank and find total ammonia to be 1.0 p.p.m. and nitrite to exceed the limits of your test kit, which is 4.0 p.p.m.
| Question | Answer | Article | |
| What is your diagnosis? | Nitrite toxicity, probably secondary to destruction of the biological filter with the administrations of antibiotics directly in the tank water. |
Link to Article | |
| What would be your treatment plan? | Immediate institution of daily 50% water changes iswarranted in this case. Adding sodium chloride to achieve 100 p.p.m. will reduce uptake of nitrite. A 23-gauge butterfly catheter was used to remove 160 cm3 of air from the swim bladder and the fish was able to right itself. It is not known what caused this swim bladder condition. |
Link to Article | |
