No water-specific exception is listed for Lardeau Creek in the current Region 4 table. It falls under the Trout Lake tributary bucket, where bull trout are catch-and-release. Default Region 4 stream rules otherwise apply: closed Apr 1 to Jun 14, trout and char catch-and-release Nov 1 to Mar 31, single barbless hook year-round. Confirm the current synopsis before you fish.

NRCan lists Lardeau Creek as an official Kootenay Land District name at 50.646111, -117.532778. It runs stream order 6 (well toward the river end of a scale that runs from 1 for a headwater trickle up to 6 or more for a full river) and stretches roughly 29 km before reaching Trout Lake, from which the Lardeau River continues down to the Duncan River and Kootenay Lake. A 2014 closed-loop stream enhancement survey describes Lardeau Creek as glacially fed and too turbid to survey during that sampling window, and notes a cascade reach that may limit fish passage lower in the system.

On the east side of the valley, Gainer Creek and a set of smaller waters, including Cup Creek, Halfway Creek, Alpha Creek, Triune Creek, Sharon Creek, Five Mile Creek and Six Mile Creek, carry only inferred sportfish context and no direct fish records of their own; treat them as habitat and access scouts rather than proven fisheries. Ottawa Creek and Brown Creek are no-sportfish side waters with old mining context from BC Geological Survey and MINFILE mapping.

The local fish-record extraction found seven direct observations on Lardeau Creek: two bull trout, two kokanee, two slimy sculpin and one record with no mussels found. Kootenay Lake bull trout survey material treats Lardeau Creek alongside Ferguson Creek as part of the Trout Lake tributary monitoring set, which puts this water squarely in char conservation territory rather than the region's open fly-fishing circuit.

No invertebrate survey has been logged for Lardeau Creek. The working food model follows the fish it holds: kokanee and slimy sculpin as forage, with juvenile fish and the smaller mayfly, caddis, stonefly and terrestrial hatches common to small Kootenay tributaries filling in where the water runs clear enough to fish. Where conditions, clarity and regulations allow a cast, small to medium sculpin- or kokanee-fry-pattern streamers such as the Woolly Bugger carry the best odds, backed by a Prince, Hare's Ear or Pheasant Tail nymph and a Stimulator, Elk Hair Caddis, Adams or Royal Wulff on top.

No named trailhead, parking area or put-in is confirmed for Lardeau Creek, and no fishing-guide coverage of the creek was found. The broader Goat Range Park country sits to the north of the Lardeau/Duncan drainage with the same conservation-sensitive framing; confirm current road, trail and land-tenure status, along with lower-cascade fish passage, before treating any reach as accessible.