Redfish are slow growing fish. Ages in excess of 50 years and lengths of up to 18 to 20 inches have been noted. Considered a deep water fish, redfish can be found in shallower waters during the colder winter months. Redfish prefer a rocky bottom. They are known to hit almost any bait. Although they are considered to be an excellent food fish, they offer fishermen little in the way of a struggle when caught.