Please : New reef tank : life identification

[v3v3]

The second crab have totaly no hair at all. He is "bald". And when he is eating he have some filtration things at him. I think that it can be porcelaine crab. This is video of him.

Porcelain Crab

 

[rusty hannon]

Welcome to R2R. This place has been amazing for me and my wife and know you'll love it too. You've got some great critters on you're rock, congrats. Things will b popping up for the next year or so, at least that's been my experience. I was told a long time ago on crabs, if the tips of the pincers are black, they are bad n you don't want them in your reef. The little spikey guy in you're pic looked like a urchin to me. Had one come up in our tank a year n a half after we set up our tank. Anyway welcome aboard