Key points Imitates / suggests: a Zooplankton (Daphnia & Cyclops) ball / general trigger; works when fish aren't keyed on a specific food . Fish it: under a strike indicator, or fast-retrieved on a sinking line . Imitates Zooplankton (Daphnia & Cyclops) (loosely) — otherwise a pure attractor. Related Hot-Weather Stillwater Tactics — when plankton-feeding makes fish hard to target. Chironomid Under Indicator — the indicator setup.