Hey guys, so ive had a piraiba in my 180 gallon tank for around 6 months, and have had him with the same fish for the whole time: a gator gar, a couple armored catfish that just hide in the driftwood and come out at night, and a rapidly growing tiger shovelnose. The piraiba is about 6 inches and the shovelnose is about 9 inches. I just started to realize that the piraibas fins are being severely picked on, and his health seems to be deteriorating fast. Water quality is good. Any thoughts on the culprit?



