Black Galaxias
One of the rarest freshwater fish on the planet, the Black Galaxias is a small, stout-bodied member of the galaxiid family known only from a single lake system in remote southern Tasmania, Australia.
Its entire documented global range fits within one watershed, making it an extreme case of freshwater endemism. Not a target for anglers, it's a fish of scientific and conservation significance rather than a rod-and-reel one.
Scientific Name: Galaxias niger
- Deep olive-brown body covered in large, irregular dark brown blocks and bars running down the sides — a pattern that blends into shadowed, weedy lake margins.
- Stout build with a flattened front end, a wide flat head, and a blunt rounded snout; the caudal fin is only slightly forked, giving it a paddle-like silhouette.
- No scales; fins are dark translucent brown. Grows to around 11 cm (roughly 4 inches) — a small fish even by galaxiid standards.
What to know
Habitat Distribution
- A cold-temperate freshwater specialist with the narrowest known range of any galaxiid — native exclusively to Reservoir Lakes in southern Tasmania, Australia.
- Uses both still and slow-flowing water within its home system; adults gravitate toward deeper, shaded areas of the lake while juveniles school in the shallows near the edges.
Specific Spots
- Adults hold in deeper, shaded sections of the lake where low light and cooler temperatures suit their cryptic lifestyle; juveniles congregate in shallow marginal areas, likely using vegetation or structure for cover.
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