Marmorkrebs, which are unusually peaceful with members of their own species, do better
when they are not kept with other crayfish, who will dominate them.
tried algae pellets and making my own food
out of freeze-dried shrimp, lettuce, celery,
granules, flakes, and crisps. I read that crayfish
will eat moss, so I added a small strand of
moss from my dart frog tank, which has no
diseases. Then I froze all of the ingredients
together, but she didn’t eat that. None of the
pet stores have live bloodworms, but they
are all getting new worms soon. Please help.
Monster is one of my Grandma’s favorite pets,
and I would hate to watch her starve.
Hi! I am 11 years old and really
like animals. I have tons of
animals, including fish, frogs, lizards, turtles, a
tortoise, a dog, and a marbled crayfish named
Monster. What should I feed her? And can I
keep any other species of crayfish with her,
possibly a blue crayfish or a flame crayfish?
At first she ate beef cubes, but she ignores
them now. Then I tried frozen bloodworms,
but Monster doesn’t like those either. I also
You must be very busy taking care
of all those animals, Alexander!
Because you keep referring to
Monster as “she,” I’m guessing the
marbled crayfish you have is the species known
as the marmorkreb, which was discovered in a
German pet shop back in the 1990s and has not
yet been given a scientific name. As you might
know, all members of this species are female and
they actually reproduce by making little clones
While this species eats mostly plants and
algae, it will also eat some meaty foods. Good
food choices include things like algae pellets,
spirulina flakes, sliced zucchini, live aquarium
plants, live snails, and bloodworms.
I think the reason Monster might have stopped
eating is that with all the different foods you’ve
been offering to try to get her to eat, the aquarium
water might be getting polluted. I would suggest
that you cut back on the food so she gets just a
small amount, test your water to make sure there
is no ammonia or nitrite in it, and do a big water
change to get rid of any dangerous pollutants
that might be building up.
I don’t think it’s a good idea to keep any other
crayfish species with Monster. I’d be concerned
that they might try to eat her, especially right