Emerita talpoida, For use as fish food

I've got some big crosshatch triggers (M is 6+ female is 5+ inches) that are kind of finicky (they will eat frozen mysis one day and not the next for example).  These are big enough for them to be snacked on (about an inch in length) and have the added bonus is they aren't eaten right away they are filter feeders who also eat detritus.  My plan is to collect 30-50 of them, feed half and attempt to culture them.  They release eggs about once a month, and can stay in the plankton for up to four months.  I'm just curious as to how big the various stages are and if they can be used to feed other things.
 
A great site (They are mostly used for fishing) is http://fishingdestinguide.com/baitSANDFLEAS.html with some great pics.  Pics when I get started, I'll attempt to culture them in plastic kiddie pools ($10 bucks, about 30ish gallons) with an inch or so layer of sand.
 
For those who aren't familiar with them they look like this:

They might work for puffers. They need something to help keep their teeth trimmed. Not sure if the exo-skeleton is hard enough to perform that function.

I love those things!! Everytime I go to the beach I actively search for them cause they are just so cool. I've attempted several times to get a couple back here to Michigan without success. Hopefully you'll have better luck in culturing them.

Chad Penney - MBI Council
Agis quod Adis