OK so over the past three days two of my creatures have disappeared. My purple firefish and peppermint shrimp. The shrimp has been in the tank for at least 3 months, the firefish for about 1 month. Both seemed quite healthy.
I have crabs that came along with the LR
...have been trying to bait and catch several, and actually just caught one about three weeks ago that I have sitting in my qt
...I thought that one might be aggressive. There are some other larger crabs that now seem to be coming out more often, they are hairy, greyish, with round bodies, and love digging under the LR
... have been unable to catch these.
I also added an arrow crab around the same time I caught that red crab...I did ask a question on this forum on arrow crabs, and BearFan I believe replied and said he had seen arrow crabs eat clownfish. Could the arrow crab have eaten both the firefish (who was hanging around lower in the rocks than my other fish, blue tang and clownfish), and the shrimp? Should I get that arrow crab, and these other crabs (which I'm having a hard time catching) out of there?