Help don't want him/her to die

[mousefue]

Here we have my beloved fish Spike. Not 100% sure what species he is, or male/female. On his right side a bit behind his right fin he has a little lump under the scales. It isn't open, nor red or getting any bigger as far as we can tell. There is no loss in colour but a slight loss in appetite. He has now become quite subdued and tends to spend his time in a cubby hole in a rock rather than out swimming like usual.

The lump is on the 3rd stripe back at the bottom. There is a slight discolouration. Anyone know what it is, what species/sex he may be.
Many thanks in advance.





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[mousefue]

Plz help x


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[SpaceFish42]

It's really difficult to tell from those pictures, could you take some from different angles? Also, what are the tank mates, parameters, etc.?

 

[mousefue]

Ok when I get home I will try too x



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