Marmorkrebs · Procambarus

Introducing self-cloning aquarium feeders

Marbled crayfish are a true self-cloning wonder for the domestic aquarium, and this is the original website for them, tracking Marmorkrebs since they were first found in a German aquarium shop in the late 1990s.

This animal is sometimes misrepresented in academic and tabloid coverage as a threatening invasive species, but for responsible aquarium keepers it's simply a useful, low-maintenance source of feeders, classroom material, and research subjects. No animal should ever be released into the wild from domestic care — but we think claims of massive ecological harm from this species are considerably overstated. As a pet, or for classroom study, marbled crayfish make an excellent addition.

For keepers of aquarium fish, reptiles, and amphibians, these crays are an ideal feeder source, and frozen crays are commonly used as fishing bait. Because they clone themselves — a rare trait for any newly discovered species — university researchers also use them to study DNA and genetics.