Please Help

[raj]

What is going on? My perculas are developing black spots and are losing thier tails, rest of the fishes are OK!

 

[mr.clownfish]

omg that looks horrible!!!

maybe fin rot?

is he eating or acting abnormal?

 

[raj]

Not eating for the past 2 days, sleeping in rocks.

 

[srfisher17]

Blach ich, maybe.I'd suggest you post this in the disease section of this forum; some real fish-health pros hang out there.