Sick Platty

[Thuggerz]

Hi all, i've got a platty which is getting very thin between the tail and the belly. The tail is starting to hang down a little. Does anyone know what it could be?..Swin bladder??

 

[WILDER]

Need to look at what you feed the fish first.
Check the anus to see if its enlarged or red and inflamed.
Going very thin has many causes from internal parasites to fish tb.