Johnston’s Weedfish

Interesting Info

• Johnston’s Weedfish is endemic to Australia and is commonly found along the southern coastline, primarily inhabiting the eastern shores of Tasmania and extending northwards along the South Australian and Victorian coastlines.
• They have a slender elongated body, resembling a piece of drifting seaweed. They showcase various colour patterns and can range from green to brown, often with irregular markings or spots, allowing them to blend perfectly with their rocky and weedy habitat.
• These fish primarily feed on small invertebrates, including crustaceans, amphipods, and tiny marine worms, which they forage for in the nooks and crannies of rocky reefs.
• Johnston’s Weedfish exhibits a remarkable ability to tolerate varying environmental conditions, including fluctuations in temperature and salinity, which allows them to survive in tide pools during low tide.
• They has limited swimming abilities due to their modified pectoral fins, which are adapted for crawling and adhering to rocks rather than propelling through the water.
• During the breeding season, male Johnston’s Weedfish undergo colour changes and develop vibrant patterns to attract potential mates and establish dominance among other males.
• These fish exhibit a unique breeding behaviour known as male brood care. During the breeding season, which typically occurs in late spring and early summer, males guard the eggs in their mouths until they hatch, ensuring their safety and providing them with oxygen-rich water.
• Their estimated average lifespan is between 3 – 4 years.