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Fish With Rot On Doral Fin


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  • Regular Member

Hopefully someone can help me or point me in the right direction...

[*]Test Results for the Following:

[*]Ammonia Level? 0

[*]Nitrite Level? 0

[*]Nitrate level? 5

[*]Ph Level, Tank (If possible, KH, GH and chloramines)? 7.6

[*]Ph Level, Tap (If possible, KH, GH and chloramines)?

[*]Brand of test-kit used and whether strips or drops? API drops test

[*]Water temperature? Don?t know but would say probably in the early 70s

[*]Tank size (how many gals.) and how long has it been running? 29 gallons nearly 1 year as goldfish tank and before that 1.5 years as tropical tank

[*]What is the name and size of the filter(s)? Fluval 305

[*]How often do you change the water and how much? Was once every 2 to 3 weeks now once every week once I?ve discovered Kokofish -about a third to half

[*]What kind of water additives or conditioners? Aqua Plus

[*]What do you feed your fish and how often? Once a day usually tetrafin gold japan (pellets), hikari lionhead (pellets) and about once a week peas

[*]Any new fish added to the tank? Not since May 2009

[*]Any medications added to the tank? 1 dose of anti fungus fin rot

[*]Any unusual findings on the fish such as "grains of salt," bloody streaks, frayed fins or fungus? Possible fungus but not woolly and in a wide line

[*]Any unusual behaviour like staying at the bottom, not eating, etc.? I think her swimming habit has changed due to effect on the dorsal fin although I?m not 100% sure

I have a 125 litre tank (29 gallons) with 1 oranda, 1 black moor and 1 short tailed ryukin (named Yuki). I bought Yuki around May 2009 after about 2 weeks after the oranda and black moor. When I bought her home she had what looked like a white mark nearer to her body http://i220.photobucket.com/albums/dd97/FiksMay/fish1-1.jpg

on the dorsal fin? over time this white marking showed through on her fin ? I?ll be honest and say I didn?t do anything about it as it seems a slow white mark that I just took it to mean that that?s what it should be ? hopefully you can see the first photo

http://i220.photobucket.com/albums/dd97/FiksMay/P1020143.jpg of the mark when I first got her and some as time has gone on - this one is around june 2009


and how she looks now


I don?t know if it is fin rot as I was under the impression that fin rot works through the fins very quickly and did have this a long time ago with a molly I had when I had a tropical tank but obviously it must be some type of rot it?s not a woolly looking one just looks like a thick white stripe which started from the base to the end of the fin and is now eroding the fin . i have now upped my water changes as assumed it might be to do with poor water quality although ive always tested water and its always been 0 ammonia and 5 nitrite I?m concerned about whether I should treat the whole tank with some salt or anti rot - or whether i should take her out as the only spare tank I have is a 27 litre one (I will have a 60 litre one going spare on Thursday as im upgrading another tank that i have then for 2 others I?m now thinking would it be a good idea to put her in there with a weak salt solution. i have so far given the tank one dose of anti rot and fungus just to start treatment any ideas would be appreciated as mentioned the only thing i think is slightly different is her swimming technique on how she turns but i guess if theres damage to the fin it woudl propel her different so i hope i havent left it too long in seeking help but had hoped with the better water conditions this might also help. thanks

i have also changed my water changing to oonce a week.

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  • Regular Member

I also have an oranda with this on one of his fins. My water results are good, regular water changes and I have tried a couple of medications on him but to no avail.

I am interested to hear of any suggestions. Sorry I couldn't offer any help, being in the same boat.

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Hi! Sorry you are having issues! Personally if you have any meds in the tank...take them out! What have you used? Do water changes until 100% of meds gone. Then I would salt.

Aquarium, Pickling, Kosher....there is a link in my signature with more options...but I would salt to .2% for a few weeks. Should heal up nicely!! Just make sure all meds are out of water prior. :heart

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ok thanks newbiefishgirl - i'll do a big water change tomorrow to make sure the anti rot stuff is out and start salting hopefully with the new water change regime and the salt solution i should see an improvement. do i need to put some heating in there or just keep as is. i will have a read of your link too

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.2% salt is 2 level teaspoons per gallon of water. So since your tank is 29 gallons, that would be 58 total teaspoons of salt added. Remember that every time you do a water change, you have to add back the amount of salt you removed. If you do a 50% water change, add back 29 teaspoons of salt.

You want to bring it up to .2% salt slowly. First add 29 teaspoons to bring it to .1% salt. Then 12 hours later, add 29 more teaspoons to bring it up to .2%. The link called "trinket on salting" in Newbiefishgirl's signature explains all of this as well. I suggest you read over that before doing anything.

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