Short-Tailed Galaxias
One of Australia's most range-restricted freshwater fishes, the Short-tailed Galaxias survives in just a handful of shallow, clear headwater creeks in a single river catchment.
Its notably stubby tail sets it apart from other galaxiids — a family of ancient, scaleless fishes found across the Southern Hemisphere. This is not an angling target; it's a conservation species clinging to existence in fragmented habitat.
Scientific Name: Galaxias brevissimus
Also known as Short-tail Galaxias
- Brown overall, densely patterned with small to moderately large brown-to-black blotches and spots that sometimes merge into larger irregular patches — effective camouflage against sandy and silty creek beds.
- The very short caudal peduncle and stubby tail fin are the defining ID feature, immediately distinguishing it from other galaxiids with longer, more tapered rear ends.
- Elongated, streamlined body with soft-rayed fins positioned well back toward the tail — typical of the Galaxiidae family, and scaleless to the touch.
What to know
Habitat Distribution
- Restricted to a single river system in coastal southeastern Australia — a critically small natural range confined to permanent headwater creeks.
- A shallow-water specialist: lives in very small, gently flowing creeks where pools rarely exceed one metre in depth, connected by short sections of riffle.
- Clay substrates overlain with fine and coarse sand, with silty patches — the kind of quiet, low-gradient stream that's easy to overlook but irreplaceable for this species.
Specific Spots
- Pools are the core habitat — the fish shelters in the deepest available water (still under a metre) where current slows and cover concentrates.
- Rock, aquatic vegetation, and overhanging grasses along pool margins provide the instream cover this species relies on for refuge from predators.
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