Hi. I have a ten gallon tank with 4 chilli rasboras and 3 fancy guppies. As far as I can tell, recently having bought them, a few days ago, and was wondering what was happing as my yellow one seems to have a chunk of his fantail suddenly missing. This is the second time now, it seems to happen once every two days or so. I was curious if one of the other guppies was picking at him, my blue one does seem more aggressive but they came from the same tank at the same time. I was hoping anyone could help me out with the issue, and if so maybe a recommendation on how to fix it? Check the added photos for images of the fish and the yellow in particular.
