Why Do Crayfish Molt?

Why Do Crayfish Molt?

Why Do Crayfish Molt?

Crayfish molt because they must shed their hard exoskeletons and grow new, larger ones as their size increases. During the first year of life, a crayfish molts six to 10 times. This number decreases to three to five times during its second year.

When a crayfish molts, it is very vulnerable for several days. It spends two to three days inactive in its home to avoid injury and predators before emerging with a strong new exoskeleton. In order to support their rapid growth, young crayfish take in 1 to 4 percent of their body weight each day. Adult crayfish only need to consume 0.3 to 1 percent of their body weight each day.