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Fish/Treating Fin Rot on Common Goldfish

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Question
I have a Common Goldfish that is 4 months old with a case of fin rot and cloudy eyes, with one eye having one blood streak. I have dosed 5 days of Melafix so far. I have used Aquarium Salt per directions to promote recovery.
Fish was great for the last two days and still healing.
This morning there is now dark streaks on all fins!
Please help!

Answer
Hello Laura, A common problem for those "dark" spots or streaks could be from an ammonia spike. Do a water change today, depending on the tank size you will need to do a 20 percent for a 10 gallon tank, 10 percent if it is above 10 gallons. Do a half if it is 5 gallons or less. Make sure you are treating the fish with an anti bacterial from melafix. Ensure that your water is good. You might want to do a water test if you have the chemicals to do so. If not, many fish stores will do them for you for free.

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Jordan Gobely

Expertise

I can answer most questions about fish care and maintenance. I am not an expert on saltwater aquariums but I am researching more about them on a daily basis. I have kept many different tropical freshwater fish as well as cichlids. Brackish water is my weakest category but if you have a question feel free to ask and I will do research on it myself.

Experience

I have kept fish for over 10 years. I am also an employee at a pet store and the head of the fish department. I am going to school at Emporia State University and studying biology with a concentration in ecology and biodiversity for undergraduate work. Right now my job is to care for and maintain the fish department at a local pet store. As far as water quality, I am well versed in different practices you can do to help improve conditions and what levels to look out for when testing the water.

Education/Credentials
I am majoring in Biology at Emporia State University and have researched fish reproductive behavior for the past decade.

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