wrote in message oups.com...
Recently, I started buying fish,
and with the exception of a few most of them have died.

When did you buy each fish which died and how big was it
compared to mantis shrimps?

2 small manits shrimp

These guys are aggressive predators. I would suspect them.
They are called mantis not manits.
Check this out http://www.blueboard.com/mantis/intro/what.htm

My question is this....What could be killing these fish....Could it be
the urchins, anenomes, or maybe the shrimp. I am baffled because the
rest of the tank looks completely healty and everone else is thriving.

If I had to bet, I would put all my money on mantis shrimps.