Brook Trout

Interesting Info

• The Brook Trout is not a true trout at all, but a type of char, closely related to Arctic char and lake trout.
• They prefer cold, clear, oxygen-rich streams and lakes, often in upland or alpine regions. In Australia, they are mostly limited to cooler habitats in Tasmania and Victoria.
• Its colouring is striking: a dark green to brown back, worm-like pale markings along the top, and red spots surrounded by blue halos on the sides. In breeding males, the belly often turns a brilliant orange-red, edged by bold white fin tips.
• Brook trout usually grow to 25–40 cm (10–16 in) in Australian waters, though in their native North America they can reach over 60 cm (24 in) and weigh several kilograms..
• They are opportunistic feeders, eating aquatic insects, crustaceans, worms, and small fish. Larger brook trout may even prey on frogs or mice that fall into the water.
• Introduced to Australia in the 1860s, brook trout were stocked to provide recreational fishing opportunities. Today, their distribution is limited compared to rainbow and brown trout.
• In some Australian rivers, they face competition with other trout species and native fish, which restricts their spread.
• They are sensitive to habitat changes — warmer water, sedimentation, and reduced flows can quickly harm their populations.
• In Australia, brook trout spawn in late autumn to early winter (May–July). Females dig gravel nests (called redds) where they lay thousands of eggs. These eggs develop slowly in the cold water, hatching in spring when food is more plentiful.
• They are primarily valued as a sportfish, sought by anglers who appreciate their fighting ability and beauty.
• Their lifespan in the wild is usually 3–5 years, although some individuals can live up to 7 years in ideal conditions.