flowerhorn head have blister like pops

Sirokeeper

Feeder Fish
Aug 1, 2018
1
0
1
31
Nepal
what happened to my flowerhorn. it has blister like pops on its head and how to treat it. please help. it is eating its food i have alraedy changed 50% water.IMG_0940.JPG IMG_0942.JPG IMG_0942.JPG
 
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