silvertip tetra with lump on tail

[mande78]

Help! My silvertip tetra has had a whitish/red lump on its tail for about two weeks and it seems to be getting bigger. It's swimming and eating as normal, but i'm worried incase it spreads to my other fish.

I have a 120litre tank water quality all checked and fine, with 6 silver tips, 7 ballon mollies, 4 young pregnant guppies, 2 male guppies and one 3" pleco.

I would be so gratefull if anyone could help me. I have tried looking online but can't find anything

Thanks

 

[lauraf]

Do you have a pic you could post?

 

[mande78]

Do you have a pic you could post?

Its not a great pic as it swims so fast. hard to get a good pic.
Thanks

 

[mande78]

not sure if this is any better

 

[lauraf]

The first thing I wonder about with any fish pathology is water quality. I know you said the water was fine, but do you know your actual levels for ammonia, nitrite, and nitrate?

 

[mande78]

Hi, I have a Tetra 6in1 test kit. Results were:
nitrate - 15
nitite - 0
general hardness - 16
carbonate hardness - 6
ph - 7.3
chlorine - 0
it doesnt give an ammonia result but i took a sample to my local aquarium place and they did a test and said everything was fine.

None of my other fish are affected and got up this morning to discover one of my mollies had dropped her fry, most were eaten but managed to save a few and are doing well. (didn't know any of them were pregnant) My guppies look due to drop any day now too.

 

[KcMopar]

If your nitrite is zero and you show nitrate its pretty safe to assume you have no ammonia.

 

[mande78]

I still haven't been able to find out what is wrong with my fish. I have tried looking everywhere but not successfuly. If anyone can help still id be really grateful.

Thanks

 

[lauraf]

It's hard to tell from the pic...you could try treating with a broad spectrum antibiotic, or, since the fish is acting normal and your water conditions are great, you might want to let things be - could just be a cyst...

 

[mande78]

Thank you everyone for your help. I have treated the whole tank with fungus medication just in case but it hasn't got any better or any worse either. still feeding and swimming normally with all other fish. Still no signs on any other fish either.

Thanks again for your help Lauraf. x

 

[lauraf]

Let us know if things change...I hope the fish stays well!

 

[mande78]

Let us know if things change...I hope the fish stays well!

Thanks. I will keep you informed. but all is still well at the moment...