Crayfish are freshwater crustaceans similar to lobsters. They have a hard exoskeleton, 10 legs including strong claws, and are found in streams, rivers, lakes, and wetlands.
Scientific Name
Order: Decapoda, Infraorder: Astacidea
Habitat
Freshwater habitats including rivers, streams, lakes, and wetlands.
Conservation
Some crayfish species are endangered due to habitat loss and pollution, while others are invasive and harmful to native ecosystems.
Lifespan
Typically 2 to 3 years, but some species may live longer.
Fun Fact
Crayfish can regenerate lost limbs and are nocturnal, becoming more active at night.
Diet
Omnivorous – feeds on plants, insects, snails, small animals, and decaying organic matter.
Average Size
Ranges from 5 cm to 15 cm depending on the species.
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What do crayfish eat?
Crayfish are omnivores and eat plants, insects, snails, decaying matter, and small animals.
How long do crayfish live?
Most crayfish live for 2 to 3 years, though some species can live up to 5-7 years under proper care.
Where are crayfish found?
Crayfish are found in freshwater environments like streams, rivers, lakes, and wetlands across all continents except Africa and Antarctica.
Can crayfish regrow limbs?
Yes, crayfish can regenerate lost limbs over time, especially during molting cycles.
Are crayfish good for aquariums?
Yes, but they need adequate hiding places and tank mates that are not too small or slow, as crayfish can be territorial.
Are all crayfish freshwater species?
Most crayfish are freshwater, but a few species can tolerate brackish water.
Do crayfish make good pets?
Crayfish can be interesting pets for freshwater aquariums, especially for hobbyists who can manage their territorial nature.
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