Cape Galaxias
A thumb-sized, scaleless native of South Africa's Cape coastal drainages, the Cape Galaxias is not a fishing target — it's a living indicator of watershed health.
Translucent enough to see its organs through the skin, this tiny fish survives acid bogs, alkaline rivers, and even brief periods out of water, yet it's being squeezed out of most of its range by introduced bass and trout.
Scientific Name: Galaxias zebratus
Also known as Kaapse Galaxias
- Scaleless, cylindrical body rarely exceeding 6 cm (about 2.4 inches) — roughly thumb-sized; internal organs visible through translucent skin in live fish.
- Dorsal fin set far back, positioned directly over the anal fin, with a squared-off (truncated) tail — a body plan shared across the Galaxiidae family.
- Large eyes and a terminal mouth with teeth; silvery overall coloration.
What to know
Habitat Distribution
- Endemic to South Africa's Western and Eastern Cape — native range runs from the Krom and upper Gamtoos River systems on the south coast to the Clanwilliam Olifants system on the west coast.
- A generalist of freshwater environments: clear mountain streams, lowland rivers, ponds, and seasonal coastal wetlands — including temporary pools that dry and refill with flooding.
- Tolerates a remarkably wide pH range (roughly 5 to 9), from acidic fynbos wetlands to alkaline river systems, and can persist in warm, degraded water where many other natives cannot.
- Remnant populations are increasingly confined to upper tributary reaches above waterfalls and other natural barriers that block access by introduced predatory fish.
Specific Spots
- Gravitates to the sheltered margins near the head of pools, where current slackens and small invertebrates drift within easy reach.
- In rivers, holds close to bank cover and submerged stones — the same structure where eggs are deposited during spawning.
See it in the app
Most maps show you water.
onWater shows you Cape Galaxias.
- 01 · Species map filter
Map every Cape Galaxias water
Pick Cape Galaxias and the map zeroes in on the waters they call home. No more guessing which lake holds them.
- 02 · Waterbody species
Tap any water. See what lives there.
Species, behavior and seasonal patterns for every lake, river and pond, before you leave the driveway.
- 03 · Angler Intelligence
Ask how to catch Cape Galaxias
Tactics, gear and timing from onWater's AI fishing guide, tuned to the species and the water you're on.
Stop guessing where Cape Galaxias are.
Open the map, filter by Cape Galaxias, and head to water that holds them. Download onWater and plan your next trip in minutes.
- Species map filter
- Angler Intelligence
- Fishing journal
Explore other species
Trout, bass, salmon, panfish and everything in between. Each guide unpacks the behavior, seasons, and tactics that put fish in the net.
No species information available.
Smarter Fishing Starts in the App.
onWater Fish gives you everything you need to plan smarter, fish better, and own every trip from first cast to last.