What is the best fish tank for pet crayfish? Well, the answer to this question depends on a few things. Are you planning to feed another fish with your pet crayfish? Are you planning to eat another pet crayfish together? Because if you do, a table aquarium or a 10 gallon tank may not be ideal. I know from experience. Personally, I recommend adding a 20-gallon fish tank to only one crayfish.
Crayfish is dirty
Crayfish are dirty little animals. They waste a lot of money. If you have them, this waste will make your tank ugly and poisonous to other fish. With a larger tank, like a 20-gallon tank, there's more water to take care of all the pet crayfish waste.
Crayfish are aggressive and territorial
Crayfish will eat whatever they eat. They are super aggressive and territorial. Having said that, if you plan to raise another fish in your tank, you need a tank large enough to comfortably accommodate everyone. Having a bigger tank will reduce your chances of other fish being eaten by your pet crayfish. They will have more swimming space. And your pet crayfish will have its own small field. But keep in mind that for crayfish, any other fish in the tank may become crayfish food at any given moment. I always recommend putting aggressive fish in the aquarium and swimming at the top. Red-tailed sharks, moles and axe fish are usually well used with pet crayfish. Anyway, they used to be useful to me.
Using at least a 20 gallon fish tank to manage water changes for your crayfish and other fish will be easier. With that in mind, be sure to replace approximately 25% of the water every week. This will ensure a healthy, clean tank. One can help keep your other fish healthy as well as your pet crayfish.
If you get two crayfish
If you decide to put two crayfish in one aquarium. According to my experience, it is only a matter of time before one person eats another. I personally think that for two crayfish, you need a water tank larger than 20 gallons. However, if you must have two crayfish, make sure they have separate hiding places. These can be purchased online, made of PVC or found in most pet stores that sell aquariums.