Took about twenty pics to get this one as the best. I don’t remember the type these two are. Cobolt is darker, larger and dominant with his fin up all day and Lapiz is a little lighter and smaller. Got them to eradicate a plague of flatworms and they have gotten the population down a bit. They aren’t the bosses of the tank, that’s the clowns and bicolour Blenny. They got pushed around for the first 48 hours but will stand up to the others now but without being aggressive about it. More like they just hold their ground and the clowns are accepting now. I was very dubious about getting them and hubby said ‘don’t name them because then you’ll get attached, they are here to get the flat worms then they are going.’ Yeah too late.