Platy Losing Color?

[theotheragentm]

I'm worried that this fish is sick. All the other Platies in the tank seem to be doing fine, so I don't know what is wrong with this fish. He is not as active as the other fish and is starting to lose color from the rear up towards the top fin.

Any ideas?

 

[Annastasia]

What are your water stats? How many males and females do you have? And no other fish are exhibiting symptoms of anything?

 

[theotheragentm]

My water stats should be fine, as nothing has changed recently, but I'll have to verify that later when I can get to my tank. There are no males in the tank. One of the females is pregnant though. No other fish are exhibiting anything. They are all bright and swimming around well.

What are your water stats? How many males and females do you have? And no other fish are exhibiting symptoms of anything?

 

[theotheragentm]

I also forgot to mention, I did make one change, raising the temperature a bit higher. I was running at a constant 76, but I knocked it up a few degrees, so I'm just about 78 right now. The fish looks better right now as far as its swimming. I haven't had time to check other tank stats or look closely at his color again.