[AquaticLife] disease question
When you are not sure what may be wrong with the fish, the best thing to do is to isolate them, as you have.
You will see an ammonia spike if you have not kept the biological filter active in the quarantine tank. What many experienced people do is to keep a sponge filter running in an active tank, so that it can be populated by the bacteria necessary for the nitrogen cycle to function. When it is needed, it is added to the quarantine tank along with the fish. While there may still be a small spike in ammonia, it will be small and pas quickly. Moving 7 fish, even if small, into a 5.5 gallon tank is one way to ensure you will get an ammonia spike, as the tank is over populated.
Now that they are in the tank, I’d raise the temp a bit, and add salt to it to start effecting a cure, while trying to determine exactly what it is the fish are suffering from. You do not mention any fuzziness with the white spots you are seeing. If they are fuzzy, then you most likely have a fungus on the fish. If they are not fuzzy, we may be dealing with a parasite of some sort, and the redness of the gills of the one fish, so far, could be a further indication of this.
If we could get a bit more information, we may be able to help you more than this. Tell us the water parameters of your main tank, where the fish came from. Tell us what kind of fish they are and how long you have had them. Give us a bit more background of the problem, when you first noticed it, how fast it has progressed, etc.
\Steve//
Category: Philippines Internet Koi Society
