For some reason, I'm not allowed to reply to the previous thread I
started on this topic. anyone know why?

Anyway...

I didn't get to try the strange shrimp when I went back to Tenichi,
but someone on eGullet had the same shrimp!

If you look at the last picture in this reply
http://forums.egullet.org/index.php?...post&p=1470174
, you can see a picture of the shrimp I saw. She calls them "shrimp
heads", but I don't think they're just the heads. I will ask her for
more details!

She said she was told they were just shrimp heads, freshly pulled off
the shrimp they had just eaten. And she said they reminded her of
baby river crabs.