So on saturday I purchased 3 bangaii cardinalfish and noticed one of them had something like a plant fiber stuck in his mouth after many google searches i found out he wont eat until its unlodged so i had to pull it out with a pair of tweezers but he still hasnt ate and that was on sunday so that makes 3 days in my tank he hasnt ate and im very worried about him 
Attached are pictures of him with it stuck and a picture of what i assume is a plant fiber after i got it out


Attached are pictures of him with it stuck and a picture of what i assume is a plant fiber after i got it out




