black spots on black p?

frontosablkrhom

Gambusia
MFK Member
Jun 9, 2008
779
0
16
34
new jersey
ok ive got a black pirhana who is still juvenille so he is still silver but just a few days ago i noticed some black spots on one side, dime size black spots that look like bruising but i have no clue, can anyone help me? im nervous for this fish! thanks
 
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