tibby25731
Fish Herder
This is one of my new guppies, currently in quarantine with another guppy who seems fine, and 2 baby golden cichlids. His tail looked fine last night, this seems to have happened over 24hours. I didn't get chance to check him this morning. It doesn't seem nibbled, it has gone kinda stringy, and it's like the colour is wearing off! This guppy had a lovely big bright yellow tail yesterday 

What is wrong with him, and how do i treat it?

What is wrong with him, and how do i treat it?
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