How does fishing at the pond work? Is it catch and release? And when would I be able to start fishing there this season?

I see folks fishing already. No necessary to release

small fish, no release necessary if don't want it throw it back and fishing is year round

You can search there all year round as long as you have a fishing license there's a fishing store on Front Street that you can get one at right down from there

Catch and release is correct, and yes you can.