Ercolania endophytophaga slug

[smoq]

I've read they feed on bubble algae but also that they are very rare in the hobby. Did anyone seen them? Is anyone tried to breed them? Bubble algae freaks me out when it grows in places where I can manually remove it and my emerald crabs don't give a damn about it.

Here's what I'm talking about: http://www.seaslugforum.net/find/ercoendo