P&L wrote:
: I introduced 5 Yamato shrimp to my planted 90gal tank the other day. Just
: for fun mostly but for algae utility as well. In the tank are a few Surpae
: tetras, cardinals, otto's, SAEs, and one medium angel. Oh and two smallish
: clowns. Chemistry is fine, CO2 injection, pH 7.0, 75 degrees.
: Shrimp scattered out of the bag, and are gone. Gone. I simply cannot find
: one. Its been about 5 days and I've looked hard. My tank is well planted so
: there are a million places they can go but still.
: I'm beginning to suspect the clowns munched them straight away. I even
: watched to see if they had full bellies and if they were hungry when I fed
: the tank. Nothing conclusive either way.
: Any thoughts folks? Are yamato's nocturnal?

They could have been eaten, but they also could be hiding. I rarely see all
of my algae shrimp at one time. I wasn't even sure they all were still there
until I moved in the summer and sure enough they were all there. Right now
I have a dozen in a 29g tank and usually only see one or two at a time. I
can get more to come out by dropping algae waffers into the tank, which seems
to draw them out of hiding.