RE: Does it Wriggle in your Chopsticks?
I've been in sashimi/sushi places in Japan where they have live fish and squid and stuff in tanks; as you order, they pull them out and dice them up whole, the fish still on the bone; plate them and put them on the table. The food is still moving as you eat; autonomic movements, the seafood reacts to touch. Yes, it wriggles in your chopsticks.
The same with Korean hotplate bbq; octopus and such is cut up but still moving. Lots of Chinese seafood restaurants, even in the US, have live tanks of fish, shrimp, etc., that they net out and cook as you watch.
Not much question about fresh. Defintely not a ploy, but an established tradition. And expensive. And a little more sophisticated than shiners and minnows.