7 Best Freshwater Aquarium Crabs – Types of & Freshwater Crab Care

7 Best Freshwater Aquarium Crabs – Types of & Freshwater Crab Care

Best Freshwater Aquarium Crabs: Freshwater aquarium crabs are a great addition to any aquarium.

These freshwater crabs are usually small and are available in different colors.

In addition to their beauty, freshwater crayfish also play an important role in the tank.

They are working to remove fish food debris and remove debris from daily aquarium use.

Freshwater aquarium crabs give your aquarium a lot of beauty and cleanliness. They are also very affordable and easy to maintain!

Without a doubt, freshwater crabs are some of the coolest species you can have in your home aquarium.

When most of us think of crabs, we imagine saltwater environments. However, there are different types of brackish and freshwater crayfish that can thrive in your freshwater tank.

These aquarium crabs are generally quite small, so you can commonly refer to them as “mini crabs”.

Crabs are scavengers and it’s fun to watch them move around in the tank and collect the goodies they see floating. It’s not just fun, either. Crabs can really help keep your tank clean.


7 Types of Best Freshwater Aquarium Crabs


1. Red Claw Crabs

Red clawed crabs are one of the most popular freshwater aquarium crabs you can get. These crabs are great as a snack because they do not require extensive maintenance.

Red crabs can grow up to 2.5 inches tall and easily live up to five years. All you have to do is feed them properly and make sure they have a clean space.

Like many freshwater crabs, claw crabs are omnivores. You can eat granules, flakes, or a combination of both to get nutrients. You can also eat other crabs and fish, so be sure to find compatible friends.

Red crabs also need a place in their tank where they are not submerged in water. Crabs like to come to the country for a while. Therefore, make sure that your aquarium contains a dry area where it can appear.


2. Fiddler Crab

Violinists are quite small and generally do not grow more than 5 cm. They are incredibly eye-catching. A claw is proportional to the body of the crab, small and delicate. However, the other claw stands out and is dramatically larger than the other. This oversized claw also has bright colors, often light yellow or gold in color.

Violin crabs are generally not very aggressive. He likes to travel in pairs or in small groups, so buy at least two of them at the same time. Like most crabs, these little animals love to hide. Because they are so small, you may have to look behind rocks and aquarium decorations to find them sometimes.

Violinists live in nature for a relatively long time, but generally only have a few years in captivity.


3. Thai Devil Crabs

Third on the list are Thai Devil Crabs. Don’t be fooled by the name! These crabs are very soft and would make a great pet.

Thai Devil Crabs are two to three inches tall. They come in many different colors, including bright purple.

Thai Devil crabs are very active members of the tank. Leave enough room to eat on the floor.

For a diet, these crabs like to eat plants and animals. You can eat small fish and salty insects. For plants, they enjoy dried seaweed and fresh or dried fruits and vegetables.

Thai devil crabs also need an area in their tank where they can rest on land. Be sure to include a sandy area with plenty of hiding places and burial places for them. They always like to appear underwater, so it is definitely a necessity for them.


4. Vampire Crabs

Vampire crabs are a very fun way to keep. They are also quite rare and probably more difficult to find than other types of freshwater crabs. They are available in a variety of colors, usually in rich shades of orange, purple, or red.
The terrifying-sounding name comes from the fact that they have unique yellow eyes, sometimes called “bright”. If you were expecting a bloodsucking crustacean, sorry for the disappointment.

Vampire crabs are small and about an inch wide. They usually live up to 3 years if they are lovingly cared for.

If you are interested in vampire crabs, keep in mind that they must provide a very specific habitat. This species is not completely aquatic. In fact, they need more dry land in their tank than water.

Like most crabs, vampire crabs eat a lot, so be sure to offer them a varied diet with plant-based substances and animal protein.


5. Gold Claw Crabs

Golden claw crabs are some of the most unique crabs you can add to your aquarium.

These crabs are so named because they have a very large “golden” claw. It’s not exactly a golden color, but it’s pretty close.

Golden clawed crabs like to eat at the bottom of the tank. They also like to dig in the sand and occasionally dig in it. These crabs definitely need a sanded area in the aquarium.

It is also important to understand that these crabs, like most crabs, can escape very well from tanks. They can scale almost anything, including hoses and pipes, and are known to sneak frequently. Be sure to secure your lid every time you open it for feeding or cleaning.


6. Thai Micro Crab

The Thai micro crab is sometimes known as a fake spider crab. These names are apt because this species is incredibly small. They are about 1 centimeter in diameter (less than half an inch!).
They are usually brown or gray in color with long spindle-shaped legs, similar to a real spider. They are also covered in very small hair, which helps them collect food that floats in the water.

Thai micro crabs are very sensitive to changes in water conditions.

Because they are so small and fragile, they cannot cope much with a predatory neighbor. That is why it is important to keep them in tanks with the most docile companions.

Small invertebrates can often live peacefully with Thai micro crabs. Some types of small fish can also live well with them.

Micro crabs are not very sociable and can spend much of the day in hiding.

Aquarium crabs are known to escape from enclosures. If they are so small, the risk is even greater.

Take extra precautions to make sure there are no small openings in your tank that can serve as an escape route for a stubborn crab.


7. Panther Crabs

Finally, we have the panther crab. Panther crabs are a popular choice due to their beautiful markings. They are bright orange with black spots, hence the name.

Panther crabs are generally very friendly crabs, but they become aggressive if not properly fed. It is important that your panther crab (and really every pet) is fed on time and in the correct amount. If not, these crabs will surely attack and eat slower fish.

Panther crabs can also escape very well. You should make sure your tank has a tight fitting cap to reduce the chances of leakage.

While giving them a good place to rest from the water is important, you don’t want them to walk around your house.


How do I care for crabs in an aquarium?

Many new aquarium enthusiasts avoid getting crabs for their tanks. They are concerned that they are too difficult to maintain.

Caring for freshwater aquarium crabs is no more difficult than caring for a fish.

Tank maintenance

As with any pet, you must provide the basic needs for it to thrive. This includes a good environment in which they can grow and live their whole lives.

Freshwater aquarium crabs are no different. First, buy a high-quality tank with a capacity of at least 5 gallons. Each smaller one is too small for your grumpy friends.

You want to imitate your real habitat in the wild as much as possible, so make your tank more cozy. Keep it at a constant temperature; Usually 72-82 degrees Fahrenheit is comfortable for them.

Add decorations like sticks, rocks, and moss so your crabs can go up and down. It’s also a good idea to set up a shielded network so that your friends don’t accidentally escape.

Fill the aquarium, but leave an area where your crabs can sit out of the water. This is good for them to rest, dig and dig.



Most of the crabs are omnivores. Therefore, feed your crabs in a balanced way with plants and animals. It is a good idea to keep your diet fresh for them.

When you first get your crab, it can take a while to learn what it likes to eat and what it doesn’t touch. You should try swapping some ingredients or swapping foods you don’t like.

Best Freshwater aquarium crabs can eat protein-based granules or algae. They also enjoy meat like flies, bloodworms, and small salty fish. Include vegetables with steamed vegetables in smaller pieces in your diet.

It is also important to eliminate uneaten food after three days. Their crabs don’t know the difference between food and rotten food. So help them out there.



Once you’ve put a crab in your tank, you can’t imagine life without it! These little creatures give your tank a nice touch and keep things interesting.

With proper care and nutrition, aquarium crabs will keep their tank busy for years to come.


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