Tasmanian Giant Freshwater Crayfish
Astacopsis gouldiAlso known as Tasmanian Giant Freshwater Lobster, Giant Freshwater Lobster, Gould's Giant Crayfish
Tasmanian giant freshwater crayfish are slow-growing titans of northern Tasmanian streams, capable of reaching weights of up to six kilograms and living for several decades. These massive, dark-armored invertebrates shelter under submerged logs and deep undercut banks during the day, emerging at night to forage along the riverbed. Because they take up to nine years to reach sexual maturity, their populations are exceptionally vulnerable to habitat disturbance and historic overfishing.
- diet
- Omnivorous, feeding on decaying wood, leaves, aquatic insects, and small fish.
- family
- Parastacidae
- threats
- Habitat degradation, siltation from forestry, agricultural runoff, and illegal poaching.
- life Span
- Up to 60 years
EN
Possesses extremely powerful claws capable of inflicting severe pinches; observe from a safe distance without handling.
Equipped with massive, powerful claws that can easily crush fingers or cause deep lacerations if the animal feels threatened.
Never attempt to pick up or corner this species; admire its size from the stream bank.Listed as Endangered due to slow reproductive rates, historic overharvesting, and severe habitat loss from forestry.
Keep a respectful distance, avoid muddying the water, and report any suspected poaching to local authorities.- Look from above: Search for them in clear, shallow pools of shaded Tasmanian rainforest streams during twilight.
- Do not disturb: Avoid turning over large logs or rocks, which destroys their critical nesting hollows.
- Respect the law: Never attempt to capture or handle these protected giants, as poaching carries heavy fines.