Compatibility of crayfish and mollies?

This is backwards from the way this question is usually asked I think. I have two crayfish holding eggs, and I would like to save the babies so I need to move them into a different tank. Would hatchling crayfish, given some soft cover like Java moss and seashells to hide in, be safe from either Poecilia latipinna or Gambusia affinis?

This is backwards from the way this question is usually asked I think. I have two crayfish holding eggs, and I would like to save the babies so I need to move them into a different tank. Would hatchling crayfish, given some soft cover like Java moss and seashells to hide in, be safe from either Poecilia latipinna or Gambusia affinis?

none of the small crawfish have every maid it more then two days in my tanks.
but all i have is native fish and small craws are just food to them.

Probably not. My mollies gobble small isopods and scuds, which are about the same size as hatchling crayfish. Large Gambusia would do the same. while small Gambusia might just pick at the crays and tear their limbs off.

Crayfish are pretty simple to raise. If you want some, you'll have to set up a separate tank for them. Put the females in it now, and remove them when they are no longer holding the young crays. Feed them crumbled and/or frozen fish food. An established sponge filter will give them something to nibble on, also. I would advise selecting a few to raise when they are as small as possible, then you may feed the extras to your other fish. That's how nature does it. Otherwise you'll be overrun in no time at all!

Well, they're destined to all be food actually, but I'd like them to grow to a healthier size, .5-.75 inch or so, so I can feed them to my bigger fish as a meal rather than just popcorn.

One of them is marmorkrebs, so it's quarantined. I'm going to let a few of those babies grow into breeders to produce more food, but ultimately they're all food. She's actually had a couple already make it to half an inch in the tank with Gambusia, but I think I have five out of maybe 20 eggs. The bigger native cray might be holding 200 eggs though. It's a bit ridiculous. She has a 75 gallon tank to herself at the moment, but I really don't want to keep devoting it to that.

Crayfish are pretty simple to raise. If you want some, you'll have to set up a separate tank for them. Put the females in it now, and remove them when they are no longer holding the young crays. Feed them crumbled and/or frozen fish food. An established sponge filter will give them something to nibble on, also. I would advise selecting a few to raise when they are as small as possible, then you may feed the extras to your other fish. That's how nature does it. Otherwise you'll be overrun in no time at all!

Good idea about the sponge filter.

I use lots of short pieces (1/2 to 3/4 inches long 1/2") of CPVC pipe to give my crayfish some where to hide from each other. Works really well....

Well, they're destined to all be food actually, but I'd like them to grow to a healthier size, .5-.75 inch or so, so I can feed them to my bigger fish as a meal rather than just popcorn.

Oh, that's different then. Just feed, feed, feed. Given enough food you can cram a lot of marmorkrebs in a small tank.