Hatch timing / abundance
- Available all year .
- Require high calcium levels (chitinous exoskeleton) — absent from low-calcium lakes; present-and-abundant = a big-fish lake .
- A staple of the summer trout diet alongside leeches and dragonfly nymphs .
Imitated by
- Scud/shrimp patterns (olive, tan, pink, UV) fished slow near weed/structure; Gold-Ribbed Hare's Ear Nymph also passes.
Found in (waterbodies)
- Productive Kootenay stillwaters (e.g. Rosebud Lake in fall); confirm per lake.
Data & occurrence sources
- Amphipods (scuds) are picked up in CABIN benthic samples, and the water-chemistry that comes with CABIN/BC EMS/ECCC monitoring can flag the calcium-rich lakes they favour; add occurrence records via GBIF and iNaturalist. Access, licences and the FWA-segment join method are in .
Related
- Hot-Weather Stillwater Tactics — part of the summer diet.
- Water Boatman & Backswimmer — another sub-surface invertebrate.
