My guppy's fins and mouth are turning green?

Question

I have a ten gallon tank 5 danios and 3 guppies. I noticed recently that the fins and around the mouth of my largest female guppy are turning dark greenish blackish. I don't know if this means she is getting sick, or if this is normal. I should also mention that the male died within the last few hours of what i believe was ich. A snail also died within the last day, but that may be unrelated, as i don't know how old the snail was. I routinely do water changes and replace the filter. Though this time the filter was extremely dirty and clogged. Does anyone know what's wrong with my tank?

Answer 1

Its is probably mouth fungus. I cured this with my dalmatian mollies by stopping feeding for a couple days at a time and decreasing the tempurture

Answer 2

sounds like ICK    

but i dont think ICK is green.............. treat the water and consult a vet if your that worried

Answer 3

you need to get the water tested. You may have a fungal outbreak in your tank. Start treating once your water has been tested.