I like jawfish, but I think you may need a deeper substrate, like 5", 6" or more even, so that might not be practical. They're also jumpers, I hear they need to be able to see 360 degrees around their burrow for them to feel comfortable.
A goby/pistol shrimp combo would make an absolutely fascinating display. That one gets a close second I think, from me.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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