Help - Fish Are Dying

rachaelcrinion

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Hi

We bought 10 rasboras and two white mollies last saturday who seemed to be doing ok in our community tank, however on Monday one of the mollies died - no apparent disease, Tuesday the other mollie died, Wednesday one of our fan tails died although think this was old age and Thursday another fan tail died (probably old age but seems too coincidental) and one of our cardinals died - cardinals symptoms looked like a fungus around it's mouth or at least it didn't seem to have a mouth left.....so I'm presuming it was cotton mouth. Treated the tank with Protozin for velvet, neon tetra disease etc.
Tonight our red tail shark is very poorly, we've moved it into the mesh breeding tank to seperate from the rest of the fish and it is limp at the bottom upside down and only seems to flinch rather than swim at all...I have noticed when it is upside down that it has a cotton wool like lump on one of it's gills. I don't expect it last the night but very worried about whats causing the problem (Since starting this post it has now died)

It's an established tank with no previous problems, we even moved house in November with no loss of life and now this. All the other fish seem ok although I have noticed the silver sharks are slightly dull in collour. Can anyone provide us with any advice, I know the nitrate is high but we can't treat due to adding protozin yesterday and we'll be doing a 25% water change in the morning?

1. Water parameters. (ammonia, nitrate, nitrite, PH, temp', Hardness etc) - Ammonia - 0, Nitrite - 0, PH - 7, Nitrate - 40
3. How often you do water changes and how much. - Fornightly 20%.
4. Any chemicals and treatments you add to the water - Protozin
5. What tank mates are in the tank. - Clown Loaches, 3 silver sharks, 10 rasboras, 2 yellow stripe loachs, 4 cardinals, 1 fan tail, three danios, 6 tetras, one black mollie, 2 flying foxes, two catfish, one bulldog catfish.
6. Tank size - 240 litre blue wave 07

Please help :sad:
 
You have a bad strain of columnaris in your tank.
Flexibactor columnaris, false name mouth fungus.
Signs are
Bleached out mouth.
Rotting mouth, best to destroy the fish.
Fluffy mouth.
cottany strands.
Columnaris is bacterial so you need to treat with myxazin by waterlife, or anti internal bacteria med by interpet, pimafix to be used with myxazin or interpet med.
Once it affects the gills not good to be honest.
With uk meds you are better off dropping the temp as columnaris thrives in higher temps.
<a href="http://www.thetropicaltank.co.uk/hdcolumn.htm" target="_blank">http://www.thetropicaltank.co.uk/hdcolumn.htm</a>
 
Thanks for being the bearer of bad news, do you think we will have got this from the new fish we introduced last week as the rasboras are all ok?
 

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