What is this?

[CorydorasEthan]

Ugh another guppy problem. Some look skinny, have fungus, or fin rot. I'm really confused and stressed since I also have finals this week. Please help identify and treat the illness. Thanks. 

 

[Colu]

What are your water parameters and have you add anything new to the tank resently and are they eating ok and still losing weight @CorydorasEthan

Edited December 13, 2021 by Colu

[CorydorasEthan]

On 12/13/2021 at 12:21 PM, Colu said:

What are your water parameters and have you add anything new to the tank resently and are they eating ok and still losing weight @CorydorasEthan

I checked my water parameters and the nitrate is high and pH is low. I am doing a water change and adding crushed coral to help. No new additions, it's been a few months since I've added any fish. They are still eating it looks like, but some do appear to be skinnier.

[Colu]

It's could  wasting disease or the lack of minerals that causing the symptoms your seeing if they have hollow bellys and a normal appetite then I would treat with Fritz Expel p active ingredient is levamisole @CorydorasEthan

[CorydorasEthan]

@Colu Several of the guppies have these sort of white spots. They are eating fine and not losing weight but have the spots. Is this ich, or is this some kind of fungal disease? What do I do to cure it? 

[Colu]

It doesn't look  like ich but the pictures aren't the best quality ich looks  like grains of salt on the fins and body is just  female or male guppy's that are affected if it's just females it could be the males being to vigorous when trying to mate rubbing the backs of the females causing some miner damage what you could is add a small amount of aquarium salt 1 table spoon for 5 gallons and increase water changes for a couple of day 

Edited December 31, 2021 by Colu

[laritheloud]

It's hard to tell from the picture, but it does kind of look like peeling scales from superficial damage.