Mutant crayfish got rid of males, and its clones are taking over the world

Enlarge (credit: Ranja Andriantsoa) It’s possible to infer many species’ origins from things like fossils and DNA sequences. But for one creature, we have a specific date: 1995. That’s when the first marbled crayfish appeared in a pet shop in Germany, mixed in with similar-looking animals that had originally come from streams in the US […]

Crayfish get drunk faster when they’ve been hanging out with friends

Young crayfish can get drunk — and they get drunk a lot faster when they’ve been hanging out with their friends, new research says. So, extroverted crayfish may want to consider pacing themselves this weekend. Crayfish are basically miniature, freshwater lobsters, which makes them an unusual model organism for trying to understand a behavior — […]