Daily quota, or daily limit, is the number of fish that you can keep per day. In British Columbia, the daily quota of saltwater fish and salmon are determined by Fisheries and Oceans Canada while daily quota of freshwater fish are determined by BC's Ministry of Environment.
The daily quota can be found in the regulation guides. They differ from species to species, from fisheries to fisheries because the health of every fish population is different to others.
If a fish population is not able to sustain a harvest, then the daily quota is usually zero and catch and release fishing allowed. In steelhead fisheries, once the angler keeps his or her daily quota, he or she must stop fishing for the day.