How Long Do Freshwater Crayfish Live: Tips in Achieving Crayfish Longevity

Freshwater crayfish live for around 2 to 3 years. Proper care will help your crayfish reach its potential lifespan of up to three years. Feed them regular clean food and water, and ensure they have enough room to swim and hide. 

Longevity Tips for Your Pet Crayfish

Avoid Stress Due to Handling

Remember not to handle your pet crayfish roughly – they are delicate creatures! Provide them with a dark and quiet environment so they can rest undisturbed. Avoid exposing them to direct sunlight as this could cause skin problems or, even worse – death.

Regarding their diet, ensure your crayfish is given a balanced mix of food items. However, they shouldn’t be overfed as this might result in obesity or other health issues.

Molting Stress

Molting is a natural process that all crayfish go through at some point in their lives. While it can be stressful for them, there are several things you can do to help your pet cope with the molting process. 

You can help ensure a smooth transition by providing hiding places and hiding food and monitoring their water and food intake.

Aggression Stress

Aggression is a natural response to danger or stress. However, in some cases, it can become extreme and lead to problems such as fights among crayfish or even injuries. If you notice your crayfish behaving aggressively or stressed out, it might be time to look for a new home. 

Providing an environment with enough hiding places and healthy food will help keep them calm and happy. It’s also important to note that different species of freshwater crayfish prefer different types of aquariums – so make sure you pick the one that best suits your pet’s needs!

Avoid Copper

Avoid using copper in any of your aquariums. Instead, only use freshwater aquarium supplies that are safe for crayfish. 

Calcium Supplements and Proper Diet

Supplementing a pet’s calcium intake is vital for overall health and teeth development. A balanced diet can also help ensure they get the calcium they need. 

If your pet seems low in nutrients or is showing any signs of illness, adding supplements to their water may be a good idea. You should consult your vet before doing anything drastic, as there could be other underlying issues requiring attention instead of just taking supplemental calcium pills.

Control Your Water Parameters

Crayfish need water that is between 64 to 77 degrees Fahrenheit to survive. Keeping your crayfish’s water at a temperature lower or higher than this can kill them. 

Make sure to check their health regularly and take them to the vet if there are any changes, especially in color or shape. Feed your crayfish once daily and change their water every two days to keep it fresh. 

When choosing a substrate for your crayfish, ensure it is moist but not soggy; too much moisture will lead to algae growth and unhealthy conditions for the crayfish.

List of Crayfish and Their Lifespan

Dwarf Crayfish

This crayfish lives up to around three years and can grow up to 1.6 inches in length. Dwarf crayfish species are perfect for those who want to keep freshwater fish without the hassle of regular water changes because they are small enough to live in small aquariums but big enough to eat some of the larger fish. 

They come in various colors and sizes, so there’s sure to be one that fits your needs. For example, when caring for dwarf crayfish, it’s crucial to provide them with a diet of mosquito larvae or shrimp twice per week.

Electric Blue Crayfish

This crayfish can live up to about six years and is an excellent addition to any aquarium because of its lively color and active lifestyle.


Yabbies are freshwater crayfish that can live up to seven years in captivity. These crayfish have sharp claws that can injure you, so be careful when handling them. 

In addition to providing plenty of clean water and introducing them slowly into the wild environment, if you want them to survive there long-term, feed them a diet that includes small invertebrates and plant matter. They love this, and it will keep them healthy and happy.

Marbled Crayfish

The marbled crayfish is a freshwater crustacean that can live for around three years. This creature can grow up to 5 inches long and has a reddish brown body with blue spots. They are native to the eastern US and have a diet that includes live foods such as worms and small fish. 

These creatures make an excellent addition to your home aquarium or pond. Ensure you keep them fed with quality food, as their diet includes live foods. In addition, these creatures eat small insects, making them an excellent addition to your home’s pest control.

Red Swamp Crayfish

Generally speaking, red swamp crayfish will live between 2-5 years when kept in captivity. They are a type of freshwater animal that feeds mainly on insects. They increase and are famous aquarium creatures and can be found at most pet stores.

Red Claw Crayfish

This crayfish has a lifespan of 4 to 5 years and can grow up to around 10 inches in length. In addition to being a food source for other aquarium creatures, red claws are essential for food security because they’re able to eat items that other critters cannot, like certain types of worms and insects.

Tasmanian Crayfish

A Tasmanian crayfish has a long lifespan of around 40 to 60 years. Because they are native to Tasmania, this species is considered an endangered animal. If you want to keep a Tasmanian crayfish as a pet, acquire one from an ethical retailer or rescue organization that can handle delicate aquatic creature populations.