galaxias of the Canterbury braided rivers

Size
Length: 10–15 cm, Weight: 15–30 g
Lifespan
3–5 years
Diet
Aquatic insects, small crustaceans and insect larvae. Lives in slow, meandering, spring-fed streams of the Canterbury Plains. Adapted to a very specific, vanishing habitat of clear, cool, spring-fed water.
Habitat
Slow, meandering, spring-fed streams of the Canterbury Plains where the water is clear, cool and rich with insect life. The fish of the spring creek, adapted to a very specific, vanishing habitat.
Range
Canterbury Plains, in spring-fed streams with clear, cool water. Most common in lowland streams with sandy or gravelly bottoms and abundant aquatic vegetation.
Endemism
Endemic
Main Threats
Habitat loss from farming, irrigation and urban development is the primary threat. Water extraction. Sedimentation from land clearance. Predation by introduced trout poses additional risks to survival.
Population
Not Threatened, but habitat is under pressure. The spring-fed streams of the Canterbury Plains have been heavily modified by farming, irrigation and urban development. Still common in remaining healthy streams.
Conservation Status
Not Threatened
Quiet resident of the spring creek. This fish is easy to overlook. The Canterbury galaxias is small and slender. It rarely grows larger than 15 centimetres. It has a pointed snout and tiny teeth. The colour is muted olive-brown to golden. A distinctive dark stripe often runs along the sides. It looks similar to many other galaxiids. But it is found only in the Canterbury region. A local specialist in a landscape that has been heavily modified. A fish that belongs to a place that is disappearing. The specificity is high. The range is limited. The vulnerability is real. Insect specialists define the species. Canterbury galaxias feed on small insects and crustaceans. They pick them off rocks and out of the current with quick, precise bites. They are not strong swimmers. They prefer the slower, deeper pools. Here they can hover in the current without expending too much energy. Excellent hiders, they dart under banks and into root wads at the first sign of danger. A fish that knows how to disappear. The strategy is evasion. The environment is calm. The survival depends on concealment. The movement is minimal. The forgotten fish of the Canterbury Plains. While everyone is talking about trout, these small, native fish are living their lives in the spring creeks. They do what they have always done. The spring-fed streams of the Canterbury Plains have been heavily modified. Farming, irrigation and urban development have altered the landscape. Many streams are gone. Some remain. The loss is significant. The persistence is notable. The change is irreversible. To find a Canterbury galaxias is to find a piece of old Canterbury. It is a small, silvery fish in a clear, spring-fed stream. A reminder of what the plains looked like before the cows arrived. Before the water was pumped dry. The history is visible. The contrast is stark. The memory is aquatic. The presence is fragile. The spring creek is clear. The galaxias hovers in a deep pool. A dark stripe runs along its side. It watches for bugs. The irrigation pump roars in the distance. The fish does not know the water is being taken. It does not know the stream is dying. The ignorance is total. The threat is industrial. The existence is precarious. The sound is constant. It just waits for the next bug. The routine is simple. The context is complex. The survival is accidental. No one told it otherwise.