Are Crayfish Good For Aquaponics? And Why?

Yes. Crayfish are good for aquaponics because they are easy, inexpensive to raise, and can survive in almost any type of water (even stagnant water). They also eat just about anything including waste, algae, and other bugs that live in your garden pond or fish tank. 

They will get big so you need to make sure there is enough space for them when they reach maturity which is usually around two years old depending on how much food you give them each day during their life span. Do I need an aquarium pump?

Yes! You will need an aquarium pump if you want to keep your crayfish alive longer than a few months after bringing them home from the pet store then putting them into your garden pond or fish tank to start their new life as part of the ecosystem inside it’s walls. 

Crayfish in Aquaponics!
Crayfish can be beneficial for aquaponics systems.
They help control algae growth and improve nutrient levels.
Crayfish can provide a source of protein in the system.
Redclaw crayfish are a popular choice for aquaponics systems.
Redclaw crayfish can be bred for commercial or personal use.
Aquaponics is a sustainable and eco-friendly way to farm.
Many vegetables can be grown in aquaponics systems.
Aquaponics requires a balanced system with proper pH and nutrient levels.
Aquaponic gardens require a fish tank, grow bed, water pump, and filtration system.
Aquaponics can be used at home for small-scale farming.

Are Crayfish Good For Aquaponics?

In short, yes. Crayfish are an excellent addition to your aquaponics system. They serve as a source of food for you and your fish, as well as a reliable source of nitrates and bacteria. 

They are also excellent at providing oxygen to their environment, which is important because they live in an oxygen-rich environment just like many fish do. Finally, crayfish will also help keep up water levels in your tank by eating all the waste that might otherwise go unused.

Maintaining a healthy Aquaponics biofilter is crucial for the overall success of your system. Learn more about the components and functions of the biofilter on our blog post about Aquaponics bio-filter explained.

Do I Need An Aquarium Pump?

When you’re building your aquaponics system, you’ll need to decide whether or not to include an aquarium pump. The main purpose of this piece of equipment is to circulate the water and keep it oxygenated. 

You can accomplish this task with a number of items, but using a pump will make things easier because it allows you to alter the flow rate as needed. 

If your plants are growing well but aren’t fully submerged in water, it might be time to increase circulation by raising the height at which they’re placed in their containers or tanks. 

A pump can also be used if there are large amounts of algae growing on your plant roots due to excess nutrients in the water (this is known as “nutrient lockout”).

What Is An Aquarium Pump?

In an aquarium, the pump is the heart of your system. It’s responsible for moving water from your fish tank to your grow bed and back again. If you have an aquarium with multiple tanks (say one for fish, one for plants), then a separate pump will be needed for each tank.

The most important thing to consider when buying a pump is power. A small-capacity pump won’t be able to push enough water through your filter, so it’ll either need to be replaced or upgraded with a stronger model later on in order to work effectively.

Curious about the science behind Aquaponics? Our detailed guide on What is an Aquaponics system – How do they work? can help you understand the basics and get started with your very own system!”

How Do You Make An Aquarium With No Gravel?

If you’re just starting out with an aquaponics system and don’t have a gravel bed for your crayfish, it’s best to opt for one of the following alternatives:

A plastic container. You can use a 10-gallon or larger bucket or tub as long as it has a lid. If you want to make sure the water level doesn’t get too high in your tank, line the bottom of the tank with some rocks before adding the sand or other substrate material.

An aquarium made from glass or plastic. These are available at most pet stores and come in several sizes (5-, 10-, 20-gallon). 

The advantage of these containers is that they come ready to go right out of the box! All you need to do is fill them with water and add gravel (if needed), plants, fish, and whatever else suits your fancy!

Can You Use A Fish Tank To Grow Vegetables?

Yes, but only if it’s an aquarium that does not contain fish or other animals. The water must be changed regularly and treated for any harmful bacteria or parasites. 

If your tank is big enough, you can even add organic matter to the gravel at the bottom of your tank and plant seeds directly into this substrate.

You can also use aquarium gravel (or a substitute) in place of soil to grow plants in pots or raised beds. 

The advantage of using aquarium gravel is that it drains well you won’t need extra drainage holes as you would with regular garden soil and there are several types available in various colors so they blend well into any backyard landscape design.

Vegetable CropsBenefits
LettuceEasy to grow and matures quickly
KaleNutrient-dense and hardy
BasilHighly valued herb with many culinary applications
TomatoesDelicious and great for diversifying crop variety
PeppersAdd spice and variety to your meals

What Kind Of Food Do Crayfish Eat?

Crayfish are omnivores and will eat plants, insects, and fish if they can find them. They are scavengers that live in the water but only come out at night to forage for food. They will eat algae and fish food that falls into the tank as well as dead fish and other dead crayfish.

Looking to grow your own vegetables using Aquaponics? Our step-by-step guide on How do you grow vegetables in Aquaponics? provides all the information and tips you need to start producing your own food in a sustainable and efficient way!

How Long Does It Take To Build An Aquaponic System?

The amount of time it will take you to build your system depends on a few factors. The size, complexity, number of plants and fish, number of crayfish, and even the type of fish can all affect how long it takes to build your aquaponic garden.

The simplest systems are the easiest to create but can also be built in a very short period. These systems are made up almost entirely of PVC piping with only a few other components such as valves and pumps added on top. 

PVC piping makes up the pipes that run throughout your system allowing water to flow from one component to another through pipes while coming into contact with the roots.

Or leaves from plants growing in those areas at some point along their route through those pipes (i.e., when water flows through them).

Complexity increases for a couple of reasons: firstly because more parts mean more connections which increase chances for leaks if not done properly; 

Secondly, more parts mean more things that could go wrong or require maintenance (like replacing broken parts). So this also adds time to building an aquaponic system!

What Can You Not Put In An Aquarium Besides Fish?

Okay, let’s get down to business. You can put only fish in an aquarium and nothing else. You need an aquarium pump to keep the fish alive and if you don’t have one, then there is no way your fish will survive in that environment. 

That’s why crayfish are good for aquaponics because they don’t need a pump or anything else when it comes to keeping them alive and well nourished!

Wondering what kind of vegetables can be grown in your Aquaponics system? Look no further than our blog post on What vegetables can be grown in Aquaponics? for inspiration and ideas on what crops will thrive in your setup.

Can You Raise Crayfish As Pets?

You can raise crayfish as pets. They are easy to care for, and they make great companions. Crayfish make great pets because they are very interactive and social animals. 

They will interact with you, recognize your voice and face (even if it’s just from a photograph of yourself), eat from your hands, and even play games with you!

They’re also fun for kids! Crayfish are an inexpensive way for kids to learn about biology, ecology, sustainability, or any other related topic. When children watch the life cycle of a crayfish in their backyard pond firsthand—from egg hatching through metamorphosis into adulthood—they’ll not only understand what’s happening but will be more excited about studying those subjects in school!

What are the types of rearing tanks?

Rearing tanks are used to grow fish or crayfish. They can be made from a variety of materials and come in different shapes and sizes. For instance, you can use a small aquarium or a large water tank to rear your creatures.

If you’re new to aquaponics, then it might be best to start with an aquarium as they are easy to care for and are much cheaper than larger rearing tanks. 

However, if you have the space available in your home or garden then using a large rearing tank will give your creatures more room to grow, making them healthier once they leave the system.

Yes, Crayfish Are Good For Aquaponics

Yes, crayfish are good for aquaponics. Crayfish are very good at what they do, which is eating fish waste and producing a great environment for the plants in your system. If you were to put crayfish in an aquarium with no fish at all they would thrive!

Crayfish can be used as part of your aquaponic setup in several different ways:

  • You can use them as a way to feed your fish (if you don’t want to buy food)
  • You can use them as a way of cleaning up your fish waste (they will eat anything that falls on the bottom of their tank)

Investing in an Aquaponics system can be a smart choice for any gardener looking for an eco-friendly and efficient way to grow their own food. Our guide on How much does an Aquaponics system cost? can help you plan and budget for this exciting new venture.

Common Aquaponics Fish Species

Fish SpeciesBenefits
TilapiaHardy, fast-growing, and adaptable
TroutTasty and highly sought-after, but require cooler water
CatfishEasy to raise and can tolerate varying water quality
PerchHigh in omega-3 fatty acids and adapt well to aquaponics systems


In conclusion, I hope you found this article informative. If it was helpful to you and your aquaponic needs, please share it with others!

Further Reading

Here are some additional resources on aquaponics and backyard farming:

What Vegetables Can Be Grown in Aquaponics?: Learn about the best vegetables to grow in an aquaponic system.

How Do You Grow Vegetables in Aquaponics?: Get tips on growing vegetables in an aquaponic system.

How Do You Make an Aquaponic Garden?: Learn about the requirements for setting up an aquaponic garden.

How Do You Use Aquaponics at Home?: Get ideas on how to use aquaponics for home gardening.

How to Make Your Own Aquaponics System: Learn how to build your own aquaponics system.

Breeding Redclaw Crayfish for Fun and Profit: A guide to breeding redclaw crayfish for commercial or personal use in aquaponics systems.

Crayfish Aquaponics: An overview of crayfish aquaponics, including the benefits of using crayfish in aquaponics systems.


Are crayfish good for aquaponics?

Yes, crayfish can be beneficial for aquaponics systems. They help control algae growth, improve nutrient levels in the system, and provide a source of protein.

What vegetables can be grown in aquaponics?

Many vegetables can be grown in aquaponics, including lettuce, tomatoes, cucumbers, peppers, and herbs.

How do you grow vegetables in aquaponics?

To grow vegetables in aquaponics, you need to have a balanced system with the right pH levels and nutrient levels. You also need to choose the right plants and provide them with adequate lighting and water.

How do you set up an aquaponic garden?

To set up an aquaponic garden, you need a fish tank, a grow bed, a water pump, and a filtration system. You also need to choose the right fish and plants and ensure that the system is properly balanced.

How do you use aquaponics at home?

You can use aquaponics at home to grow vegetables and fish in a sustainable and eco-friendly way. You can set up a small aquaponic system in your backyard or even indoors.

How do you build your own aquaponics system?

To build your own aquaponics system, you need to follow a few basic steps, including choosing the right fish and plants, setting up a grow bed, and ensuring that the system is properly balanced. You can find detailed instructions and tutorials online.