What is this?

[shanna.mcbane]

I have 2 fish with these sores. Can you tell what it is? 30gal with assorted mollys, platys 1 pacu cousin (cant remember the name)http://cloud.tapatalk.com/s/57e350de...-22-23-29.png?

http://cloud.tapatalk.com/s/57e350f2a683c/Screenshot_2016-09-21-22-22-32.png?

and corydoras.

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