Hermit Crabs grow through moulting. If you notice a hermit crab pre and post moult you will see very little difference, but over ten or twenty years it is quite significant. Another way to tell age is to look at the thickness of antennae and the little teeth on the cheliped/grasping claw.
How can you tell how old a crab is?
For many Alaska commercial fish species, accurate ages are determined by direct examination of hard structures like scales or ear bones (otoliths), which contain banding patterns associated with seasonal fast and slow growth, like growth rings in trees (light and dark bands in Image 1).
How long does it take for a hermit crab to grow?
Any crab – regardless of size or species - can take as little as a few days to a maximum of 8 months, and possibly longer. NEVER DIG UP YOUR CRAB! Hermit crabs can regrow lost limbs and partial limbs!
How old is the oldest hermit crab in captivity?
At 42-years old, hes also one of the youngest but has outlived most of his peers. Jonathan is the pet hermit crab of Carol Ann Ormes. Hes believed to be the oldest in captivity.
What is the biggest hermit crab ever?
coconut crab The coconut crab (Birgus latro) is a species of terrestrial hermit crab, also known as the robber crab or palm thief. It is the largest terrestrial arthropod in the world, with a weight of up to 4.1 kg (9.0 lb).
Whats the biggest crab in the world?
But the coconut crab is the largest crustacean that spends all its adult life on land, with a Guinness World Record to prove it. Its also the biggest land-dwelling arthropod, the group of invertebrates that also includes insects, spiders and centipedes.