Yellow/Brown Stringy Clownfish Poop

[Tony R.]

My two clownfish as of today have both pooped out a stringy brown/yellow substance today. It get stuck on them for some time until they smear it off. Pictures below.
I've had them for 3 weeks this is the first time showing signs. There is also a goby and yellow assessor which seem to be fine.

I feed New Life Spectrum Marine Formula once daily.

I ordered New Life Spectrum Hex Shieldnat the moment. But I'd love to hear advice or suggestions.

 

[Tony R.]

My two clownfish as of today have both pooped out a stringy brown/yellow substance today. It get stuck on them for some time until they smear it off. Pictures below.
I've had them for 3 weeks this is the first time showing signs. There is also a goby and yellow assessor which seem to be fine.

I feed New Life Spectrum Marine Formula once daily.

I ordered New Life Spectrum Hex Shieldnat the moment. But I'd love to hear advice or suggestions.

Picture: