I bought 3 altum angels two weeks ago, they are doing very well, eating, swimming healthy, but lately I have been noticing that they have been chasing each other and biting each other quite often. I have them in a 29 gallon w/4 clown loaches and asynodontis multi. pair. They are prob around 3 inches tall so they have plety of room to swim. Was just wondering if it any cause of concern. Btw all water conditions are perfect ph 6.8 etc.