Banggai Fish acting weird

[Badiskm1]

I have a 300 liter/80 gallon tank with 2 ocellaris clowns, 3 banggais, 1 sand shifting seastar and 1 one spot foxface. I came back from school, and one of the banggais was laying down on the sand I thought he was dead, so i tried to pick him/her up but him/her moved, but he/she is not moving as fast and isnt moving a lot, i think the two things:
1. he/she got stung by the foxface
2. this might be behavior of pregnancy or brooding
If you know about this or have had experience, please help me, as I am worried that he/she might die, thank you.

[snorvich]

Three Banggai is not going to be stable in an 80 gallon tank. A male plus female will work, but two males will not and a FMF will work only in large tanks.

[Badiskm1]

One of my Banggai disappeared, I really don't know what could have happened. I took all the rock out and he was no where. Im guessing the other fish ate him.

[rssjsb]

More likely that the other banggais killed it and your cleanup crew disposed of the remains.

Sorry, I know that stinks, but Steve is right. These fish do not do well in groups. Keep a sharp eye on the other two and be prepared to remove one. Unless they're a male and female, the strongest may pick off the weakest so you only have one.

[Badiskm1]

Thank you guys, I found it dead today with out any fins and a huge cut over its head, and half of the body gone....