Small Crabs for GSP (Fresh/Brackish)

[Wake]

My GSP is hungry, but he's not really eating too well.

He tore apart a large mystery snail about a week ago and his owner was about to flush him down the toilet, so I adopted it.

Live blood worms he gobbles up by the dozen. I've put in twelve ghost shrimp and have found dead carcasses the morning after. Gave him freeze-dried krill once, but I hear it causes lockjaw (irreversible?).

Put a bunch of Malaysian and pond snails in his tank with him, with a guppy. He hasn't snatched the guppy yet, and I don't know if he's eaten any of the small snails yet.

Need a better way to feed him, so he gets the nutrition he needs.

I hear crab is good.

Do you know where I can find some tiny, breed-able crabs for him to munch on?

I figure it'd be easy to clean his tank that way, too (I hope).

[Pufferpunk]

I'd remove any other life from your tank, since you're having cycling issues.

Everything you need to know about food choices is in the article posted to you in your other thread. No need to start new ones.