Variegated Pygmy Perch

Interesting Info

• The Variegated Pygmy Perch is a small freshwater fish found only in a few parts of southeastern Australia, mainly in western Victoria and southeastern South Australia.
• Their name comes from their mottled “variegated” colour pattern — olive-brown with golden or reddish hues and darker blotches that help them blend into aquatic plants and leaf litter.
• Males become more colourful in the breeding season, showing reddish fins and brighter body markings to attract females.
• Their preferred habitats are slow-flowing creeks, billabongs, and wetlands with dense aquatic vegetation, where they can hide from predators.
• They are omnivores, feeding mostly on tiny invertebrates, insect larvae, and small crustaceans, helping to keep wetland ecosystems balanced.
• Once far more widespread, their range has shrunk dramatically over the last century due to wetland drainage, river regulation, drought, and invasive fish such as redfin and gambusia.
• They are considered one of the most threatened of the pygmy perch group, with some populations numbering only a few hundred fish.
• Breeding happens in spring to early summer (October–December) when water warms to about 16–20°C. Females lay small batches of adhesive eggs on aquatic plants, and males guard the nesting site until hatching.
• Hatchlings remain hidden in weed beds and shallow margins, feeding on microscopic plankton before moving on to insects and crustaceans.
• Adults are tiny, usually just 3–4 cm (1.2–1.6 in) long, with the largest reaching 6 cm (2.3 in).
• Lifespan is short, around 2–3 years, though some individuals survive longer in cooler, stable habitats.