Freshwater lobster?

[jamzwayne]

That sounds about like what I've heard 1tankneverenuff. Aggressive.

 

[QCppg]

I have a common crawfish living in the bottom of my sump because it got evicted from it's own tank when it refused to stay there. IMO the hardest part is getting the food pellets to it, and that's just because of where I'm keeping it.

 

[RTR]

Alright.

This is what I've heard and what changed my mind bout keeping one.

• 
  They will tear up your live plants.
  Once they are big enough, they will "re-decorate" your tank, by moving stuff around (little land scapers).
  Very aggressive.
  They will harm your fish, no matter what size.

And they are called crawfish here in the south.

Yup. Makes them sound a lot like substrate-spawning Cichlids doesn't it? But those are among the most popular groups around. Aggression and tendency to re-landscape is really not a disadvantage for most hobbyists - more ofetn than not it is a sign of a critter which is highly interesting as a captive.

They don't belong in "community" tanks. But then, neither do the majority of the critters I keep.

 

[SomethingFishy]

I had a blue one for about a year, then something went wrong during a molt & he died. I've since read adding a little iodine helps with molting. Wish I knew that then He was really cool. Like someone said, he would shred any live plants, and liked to move around the plastic ones.

 

[ryan]

I have a blue crawfish, had it for about 2 years now give or take. It has never harmed a live fish, but i have seen it eat fish off the filter intake. however i understand that my docile crawdad is a rareity as they go. its very skittish, but less so with all the java moss the tank is clogged with. If you get one definatly get it some kind of cave to hide in, reduces stress immensely.

 

[lifeisajoke121]

i have caught crawfish at the creek behind my school, and it has tons of trash in it. They can be quite hardy. Usually, they will eat slow, asleep, or dead fish. usually, females are more aggressive, especially if it has eggs. BTW, how do I tell if crawfish eggs have been fertilized?