SIZE: Up to 8kg (Allthough in South African trout rivers and streams a fish of 2kg would be considered very big. Ave size in rivers are from under 500g up to 1kg.)
SPECIES: Introduced (Alien Species)
DISTRIBUTION: Mountain streams and dams of the Western and Eastern Cape, KZN, North-Eastern Freestate, Mpumalanga, Northern Province,
Swaziland, Lesotho.
DIET: Small fish, crabs, snails, aquatic invertebrates, terrestrial and aerial insects, frogs.
TACKLE REQUIREMENTS: RODS: 2wt to 3wt, most popular length is 7'6". Some anglers also prefer longer rods, up to 10 foot, for wider rivers. There is no need to go lighter than a 2wt rod, as you will encounter wind most times, as well as the possibility of hooking into a really big fish. You want to subdue the fish as soon as possible, and the 2wt or 3wt will handle the fish better.
REELS: 2/3/4wt Reels. Drag systems are not that important, as most fish will be fought close in. a Click-and-pawl drag system is more than sufficient.
BACKING: Not much backing is needed, but reels must be loaded with backing to take up most of the reel's arbor, to minimise memory in the line, by increasing the line's diameter when coiled onto the reel.
FLY LINE: 99% of your fishing will be done with a floating line, either 2wt or 3wt, to match the rod.
In some deep pools in rivers, an intermediate line can be used if the fish are deep, but mostly a floating line with a long leader will suffice.
LEADERS: At least a 9 foot leader, tapering down to 1X or 2X.
TIPPETS: 3X, 4X, 5X, 6X and even 7X.
FLIES: DRY FLIES: (All #10 to #16) - DDD, Parachute Adams, Stimulators, Humpies, Elk Hair Caddis, CDC Caddis, Klinkhammers,
Airheads, Hopper Patterns, Beetles, Flying Ants, RAB, Daddy-Long-Legs, Spiders, Royal Wulf, etc.

NYMPHS: (All #10 to #18) - Kaufmann's Pheasant Tail Nymph, Flashback Nymph, Beadhead Nymph, Brassies, San Juan Worms, Beadhead CDC Mayfly Nymphs, Sparkle Pupa, Gold Rib Hares Ear (Natural colour and Olives, with and without beads), Hotspot Nymph, ZAK, Glow-Bugs, Egg-patterns, etc.
STREAMERS: (#10 and smaller) - Wooly Buggers (in Olive, Black and Brown...with and without bead-heads or bead-chain eyes, weighted accordingly), MSP, Zonker, Crystal Buggers, Dragon and Damselfly nymphs, Mink Burgers, Attractor and Baitfish patterns, Aggravators, etc.

METHODS: Most popular methods are Upstream Dead-Drift (New Zealand Style nymphing with a yarn indicator), or fishing with a dry-and-dropper rig, or just dry fly. Casting downstream and retrieving a streamer fly back upstream is also used.
TIPS: Always de-barb your flies. It's easier to remove them from the fish's mouth and your skin. (in case of a miss-timed cast!)
Try not to handle the fish too much, and do not keep them out of the water for longer than 5 seconds.
Stay out of sight, especially when high-sticking. Trout streams are usually crystal clear.
Use a soft mesh net, with no knots.
Always wet your hands before handling a fish...your hands can remove their protective mucous on their skins.
Never under-gun your tackle...don't use 7X tippets when 1.5kg plus fish are around!
Land and release the fish as quickly as minimise the stress on the fish.