Let’s say you have a tank, and you are planning to keep crustaceans such as crayfish and crab in the same tank or aquarium, you might be wondering if it is actually possible to keep these 2 crustaceans in the same aquarium. The question is, ‘can crayfish or crawdad live with crab?’.
Can crayfish and crab live together? Crayfish and crabs cannot live together in the same aquarium. Crayfish dwells in a freshwater, while crab dwells in brackish water.
Both crayfish and crab belongs to the crustacean family and they almost look alike, but there is a very big difference between the two creatures. These differences are more in their nature than in their looks.
The fact is, crabs love and dwells in brackish water, and any other eco apart from brackish water could pose a great danger to them.
On the other hands, crayfish loves and dwells in a freshwater. and any other eco apart from that could also harm them.
Therefore, both of them could not be kept together in the same tank or aquarium, as the water condition might not favor one of them, for instance the crab do require brackish water and the crayfish do need freshwater, so you see?, their nature are quiet different and so cannot live together.
Apart from their environmental differences, both water creatures act differently, for instance, crayfish is very aggressive and troublesome, while crab is not that aggressive nor troublesome, but does not like being disturbed a bit. Crab could become deadly to crayfish if it is disturbed by it and might harm or even kill the crayfish.
Although both of them have strong claws and at the sametime are bottom dwellers, this will make them to often stay on the way of each other and would likely cause problems.
I have seen some people say, crayfish and crab could live together in a freshwater, because they have tried it and they survived, maybe for a few days. I have also seen some people put salt in their freshwater crayfish aquarium, in order to bring crab to live with the crayfish.
Well, this is very bad. The fact remains that the crawfish will not survive on the long run if placed in a water that is very suitable for crab, neither will the crab survive if placed in a freshwater which is meant for crayfish, so even though they seems to live comfortably at first, on the long run they will start dying.
Even though it is possible that they could live on the same eco, eventually they will kill themselves!.
Will Crayfish Eat Crab?
Assuming there is a way to make an aquarium or tank suitable for both of these aquatic creatures, the question you might ask is, ‘will or can crayfish eat crabs?’, knowing how aggressive it is to another aquarium animal.
Will Crayfish Eat Crabs? Crayfish cannot kill or eat a crab, rather the crab might kill it when they fight.
Both crab and crayfish are bottom dwellers and do belong to the same family of crustacean, although crayfish is more aggressive than crab, it doesn’t mean it is more powerful than crab, as both have strong claws.
The fact is crab have more powerful claws and shell than crayfish, and when they fight, crab is more likely to overpower crayfish and kill it.
I have seen crab kill a troublesome crayfish that was temporarily placed on it’s aquarium, and this got to prove that crab is more powerful, and crayfish cannot kill nor eat it. Again this shows that both cannot live together in one aquarium or tank, at least for long.