Red veins on goldfish

[aquatic_life]

Hi,

I have a three year old goldfish in a settled tank of around 100 litres with red veins on its tail.
I haven't seen any other symptoms. The red veins have been there for over a month now. I have tested for Ammonia and there is none in the tank. Could you suggest what else it might be? The tank has been having some mosquito egg laying issues recently but the larvae are cleared out regularly.

Any suggestions for medicine would be appreciated. The tank has a canister filter as well as sponge filters. there is plenty of surface agitation.

I have attached some pictures for your reference.


Thanks

 

[Tifftastic]

Did you test the nitrates in that tank as well?

 

[Ashrith]

Try adding an airstone to improve water circulation. The improved water circulation will help add oxygen to the water. Also run a nitrate and nitrite test.

 

[Benate]

My goldfish also have red vein sin its tail .I have asked with several people but didn't get an appropriate answer.I will try out the decision by you people.Thanks.

 

[myswtsins]

My goldfish also have red vein sin its tail .I have asked with several people but didn't get an appropriate answer.I will try out the decision by you people.Thanks.

Glad you found some helpful info but this thread is rather old. It is best to start a new thread specific to your situation to get the best help. To start a new thread just go to the correct forum (Cold water) and towards the right side is a blue button that says "post new thread".