Poorly fantail

[ProfScience]

Hi

Any help/advice would be appreciated please. I have two fantails, a male and a female, about 8 years old. One of them has seemingly got a swimbladder issue over the last month or so as he is frequently floating at the top, or otherwise upside down in the middle of the tank at rest. There have been a few times where efforts to fix it have worked, but the issue keeps recurring. He is fully able to swim when woken up, and can swim to the bottom of the tank, although finds this harder than swimming near the top.

I have followed some advice on this issue in:

1) adding a very small amount of aquarium salts to the tank when cleaning

2) withholding food for three days

3) feeding with shelled peas

Sadly nothing is working. The other fantail is completely healthy, so I am worried that the male has an internal problem that is affecting his swimbladder. I had been told after the withholding of food and then feeding of peas that if he is still not fixed that I should perhaps euthanise him. It would be very sad if I had to do this, particularly as a friend of mine will be taking them both soon to live in her pond as keeping them in a tank is making me feel increasingly guilty. So I just wanted to know if there are any other things I can try to save him, or if you think the kindest thing to do would be to euthanise him. 

Thank you very much in advance for your advice and help - it is very much appreciated. 

[koko]

 

Please copy & paste the following form and fill it out to the best of your ability when requesting help for Goldfish Problems:

 

Test Results for the Following:

 Ammonia Level(Tank)

 Nitrite Level(Tank)

 Nitrate level(Tank)

 Ammonia Level(Tap)

 Nitrite Level(Tap)

 Nitrate level(Tap)

 Ph Level, Tank (If possible, KH, GH and chloramines)

 Ph Level, Tap (If possible, KH, GH and chloramines)

Other Required Info:

 Brand of test-kit used and whether strips or drops?

 Water temperature?

 Tank size (how many gals.) and how long has it been running?

 What is the name and "size of the filter"(s)?

 How often do you change the water and how much?

 How many days ago was the last water change and how much did you change?

 How many fish in the tank and their size?

 What kind of water additives or conditioners?

 What do you feed your fish and how often?

 Any new fish added to the tank?

 Any medications added to the tank?

 List entire medication/treatment history for fish and tank.Please include salt, Prazi, PP, etc and the approximate time and duration of treatment.

 Any unusual findings on the fish such as "grains of salt," bloody streaks, frayed fins or fungus?

 Any unusual behavior like staying at the bottom, not eating, etc.?

"If copy and paste doesn't work for you, quote this post and put your answers after each question."