i kept her in with my feeder minnow until i found out she was pregant.. now i keep her in with my ghost shrimp and my diff size guppys no problems.. i even i haves in with her but she eats them unless they big
if a fish is to slow and gets in front of them, and they are hungry they will eat fish. One of the little 1 inch ones i had almost killed my 2 1/2 inch blood parrot (thats why i turned all mine into feeders, well that and i have about a million of the little things) trust me they will take over
From what I've read, these guys (ok in reality gals) are pretty hardy. Packaging for shipping shouldn't be any problem as long as it's not going anywhere super cold. If you have any unspoken for, I'll take a couple . Time to breed for my aros.
Males do not exist in marbled crayfish. All specimens are females. They reproduce on their own with no mates. One crayfish can create a colony! Amazing.