Wth?HELP?! My bala shark is a huge bully - agression problems

[mr.bigglesworth]

Here's a video of my bala shark pissed off. He and my parrot fish are circling each other and full on attacking each other. https://www.youtube.com/watch?v=_zx_j4FfPTs&feature=youtube_gdata_player

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[petspoiler]

looked to me like one morsel of food at a time was being dropped in the tank & caught by the parrot, food not tossed around for all fish. the bala was detecting food around the parrots' gills and trying to get some. most fish will fight over one piece of available food. ? the bala needs smaller bits.

 

[love The Jack Dempseys]

I have 2 balas and when they were the same size as yours they did that to eachother and twisted around eachother, not sure if its aggression or just something they do