Before you dump them read this months Tropical Fish Hobbiest mag. Great section on hermits and they rate both the scarlet and the zebra (Calcinus seurati) as some of the safest, and as two that are great together.
No matter what one you pick you will find someone who says they are the worst.
I have zebras, blue legs, red legs, and scarlets. Its very rare that I ever see them fighting and so far no fatalities. My one zebra is about 20 times larger than some of the others so he could very easily harm them, yet never has.
Hiya,
Thanks guys. My LFS said they would be safe with the scarlets, but I always like to pass things by you folks first. So far, everything they've told me pretty much matches up with this board.
Meadbhb
I have a pico tank with 1 scarlet and 2 zebras in it. So far no casualties but its only been 1.5 weeks running.
After doing some research, I've come to the conclusion that scarlets are the safest and hardest working but tend to stay on rocks. Zebras are semi-safe, very active but dont do much when it comes to cleaning. Blue-legs are straight up agressive. Red-legs I believe are also semi-agressive.