Thanks a lot ! I was very, very happy to have got these fishes. I hear that some 10 spcimens were shipped to Japan, and you may find them on a web in the US. See the web.
Heniochus acuminatus, adult pair at the depth of some 40 cm in the harbor near the wall. They are some 16-18 cm long and perhaps they survived cooler waters here in winter.
I saw three individuals of an unknown animal, perhaps a nudibranch but I cannot find it in any literature. They were slowly swimming near the surface in the yacht harbor.
One of them was some 40 cm long. I would greatly appreciate whoever can tell its name.