Thin Guppy

[tanzaniterose]

Hi all, first post here, I've been rummaging through your threads and can't find any situations similar to mine so I thought I would sign up and ask.

I got my first guppies recently, I ended up getting a baby and an adult female for free as they were scooped accidentally. The adult female is what worries me, she is thin compared to the others, doesn't seem that fussed on food and her pelvic fins stay relatively clamped against her body, the dorsal and anal are not. Whether or not this is relevant but she is grey in colouration and she has been like this since I got her and has done two long white poos since I've had her.

Extra info (because I know you'll want to know some of this): The tank is a 20g and has been cycled for nearly a year now. There are many plants in the tank and she doesn't seem to be getting bullied or pestered by the other fish. The fish that are in it are just guppies, I have 4 boys and 9 females including the baby and thin female. Diet-wise, they have had their first shelled pea and some tropical flakes. The tank and fish have been treated with myaxzin, all of the other fish are healthy with their fins out and active appetites and the temperature of the tank is currently at 76C but normally is steady at 72 (warm night!).

Any help would be appreciated.

 

[likescichlids]

sound like she has internal parasites...

 

[tanzaniterose]

If that's the case the myaxzin should be getting rid of them and hopefully eliminating any that might be in the other fishes too. She looks a bit cheerier today, her pelvic fins are appearing away from her body a little more and she came up to the top for some food although she still wasn't as eager as the other fish.