Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Please help my struggling dying oranda (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/please-help-my-struggling-dying-oranda-19387/)

charmian2009 11-24-2008 04:31 PM

Please help my struggling dying oranda
 
I bought a secondhand Jewel Rio 180 litre fish tank. The previous owner kept pharanna's in it. I then kept 8 fancy goldfish and 16 danios in it. First the tiny goldfish died (I had just bought her from the petshp but she had a white lump on her back), then a tiny black moor, then a calico, then another calico, then my 2" black moor, then a common goldfish, then another and now the last one being a white oranda (which I have had for 18 months and she is beautiful) is on her way out.
I have treated the tank with esha 300 which cures (supposed to) many things but none of them has been saved. Now, I have taken out the oranda and have her in a smaller tank by herself as she is at the bottom struggling to breathe. She is normally pearly bright white but from the mouth to the back of her gills she has a pink tinge under her gills. I know she has obviously got some bacterial bug or something that is affecting her breathing. That's how they all have gone. I took advice from the pet shop but to no avail each time they have gone down with it. I do 20% water changes every week with treated water, do everything I should with the filter media. Vacuum the gravel and have cared for my fish the best I can.
I am wondering if there is something wrong with the tank. Doe anyone think that it is because I used a tank which previously held pharanna's in? If they had a bug, do you thinkg that it has inpregnated the tank? Why, after all the good care I have taken and tried treatment etc, they have still died? By the way, they have died over the period of around 6 months or so. So I have lost one at a time every other month or so. I also only have 8 danios left.
Please help. My oranda is on her last legs, is there anything I can do. She was the best one I owned and a wonderful specimen. susan.ae@btinternet.com

Kim 11-24-2008 09:38 PM

Ok, we need a bit more info and a picture would be great.

Do you have a test kit and if so what are your readings?

Any other symptoms before they die? Did the deaths start after the introduction of anything new to the tank (fish, decoration, water conditioner, etc.)? Do you use a water conditioner?

I am not familiar with that medication. Could you please post the active ingredient(s).

Little-Fizz 11-25-2008 07:51 AM

Well your tanks pretty small for the amount of fish you keep in it. A 47 gallon is good for like maybe 3 fancy goldfish... But not 8 plus 16 danios... My guess is that water quality is killing off your fish. Buy a liquid test kit and test the water then post the results. Make sure the test tests for ammonia, nitrites, nitrates, and pH. But in the mean time do a large water change sayyy 50%. The pinkish gills could be due to ammonia poisoning.

How long has the tank been set up for? Is it possible it's still cycling?

iamntbatman 11-26-2008 01:52 AM

How long had the tank been laying around without fish in it before you started it up again? I doubt that your fish got sick from bacteria still present in the tank from the previous occupants. More likely they're suffering from poor water quality and becoming ill due to their immune systems being compromised.


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