Updated: 6 Feb 2026 | By Shayne Prinsloo
Want to improve your odds on the Vaal River? Whether you're new to fly fishing or refining your Yellowfish game, this guide explains the “why” behind the “what” so you can fish with confidence.
How to Fight Yellowfish
Yellowfish are strong, fast, and love to run hard in current. Keep steady pressure without locking the rod. Use the midsection of the rod, let the drag work, and keep the rod angle low when the fish surges.
- Side pressure: Change angles to turn fish out of snags.
- Low rod on runs: Protects knots and tippet.
- Drag set “firm-smooth”: Enough to turn, not pop.
Guide Tip: Don’t rush the net—wait until the fish is tired and turns sideways. Net head-first when it commits.
Why Tungsten Beads Matter
In fast Vaal runs, getting down quickly is everything. Tungsten gets your fly into the strike zone faster and keeps it there longer.
- High flows / deep slots: 3.5–4.0 mm beads.
- Low, clear water: 2.5–3.0 mm beads for more natural drifts.
- Perdigon bonus: Slim bodies cut turbulence and sink fast.
Best Flies for Summer Flows
From October to March, fish feed more actively and move around more. Carry a mix for clarity swings and current speeds.
- PTN — deadly in slower, clear slicks.
- Tungsten PTN — the all-rounder with a natural profile.
- Hotspot Hare’s Ear — pops in stained water.
- Perdigons — ideal for Euro rigs in fast runs (size 14–18).
Size 14–18 is the sweet spot. Mix natural and high-vis patterns and adjust bead size to control the vertical lane.
Euro Nymphing vs Indicator Nymphing
Euro nymphing shines in faster pocket water with precise depth control and instant feedback. Indicator nymphing excels in wider, steadier runs where longer drifts and visual strike detection help.
- Euro: Tight line, two flies, bead swaps for depth and speed control.
- Indicator: 9–12 ft leader, early mends, occasional bottom tick.
We teach both styles and bring custom leaders, sighters, indicators, and bead options to suit the stretch you’re fishing.
Understanding Fish Behaviour & Senses
Approach low and slow. Fish detect movement, vibration, and pressure changes via vision, hearing, and their lateral line.
- Vision: Stay low, avoid skyline silhouettes, use shade and cover.
- Vibration: Quiet feet and smooth wading reduces disturbance.
- Light & clarity: In clear water, lengthen leaders and go slimmer.
- Approach: Work from downstream where possible.
