agresive angle fish

[tropicalsteve1]

Hi all i have a very large aquarium with a mixture of live berers and a few other fish i got an angle fish a wile ago and he or she i dont know how to tell the sex? I dont know if you can?? But it grow quite lare and seems to be quite agressive towards the other fish is it just being tertorial or just norty?? Will it kill or hert any of the others?? It hasno't yet but im just a little worried.
Can anyone help or give me some advice?
Fishy regards, Steve.