Turning clear?

[VirgoWolf]

I adopted a black molly a few weeks ago. Before I left for the weekend I noticed the top of her head behind her eyes was lightening, which I have heard is a sign that they aren't healthy. I get back and now that part has grown and gone completely CLEAR, it also looks kind of like it is caving in. Anyone know what this might be? The dwarf gourami and her 8 fry that share that tank are doing great. She is acting normal and eating just fine, but this has me concearned. Should I try to treat her or just put her down? It doesn't look reversable, but I'm not sure. Just weird, never seen anything like that, no fungus or visible parasites, no other fish affected, just clear.

 

[DarkElf_Mairead]

Try a little aquarium salt in the water (not table salt). I hear that reduces stress and such.

 

[VirgoWolf]

Eh, we just put her down, hubby agreed that it looked irreversable. I don't want to risk anything passing on to the fry or gourami, so I figured it was the best for her and them. Thanks anyway.

 

[DarkElf_Mairead]

Probably for the best