The decision that was made was based on evidence that the size of the redfish was sufficient to get a sufficiently high price in the market and to make it a viable fishery. If there were no benefits to fishing this resource, fishers wouldn't do it.
Evidence of meeting #123 for Fisheries and Oceans in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was work.
A recording is available from Parliament.