Nymph
NZ Green Rock Worm Larva
NZ caseless searcher
Trout · GraylingDeep
Caseless predatory caddis larva of clean fast rivers — fished deep and dead-drift like a green rock worm.
Fish this when
In clean, fast New Zealand rivers year-round, dead-drifted deep through bouldery runs as a searching point nymph rather than a hatch-specific pattern.
Why it works
Like its Rhyacophila counterpart, this larva actively forages outside any hatch window, so it earns takes on presence and drift rather than on matching a moment.
Naturals it imitates
free-living caddis larva
Typical zone & fishable range
usually
Surface
Film
Subsurface
Deep
Setup sensitivity: medium
Quick facts
Tying difficulty
Beginner-friendly