I had some success with breding Calloplesiops altivelis back in my student days in the early ninties.
In 1992/1993 I was able to get 35 C. altivelis past 7 weeks. Of those 13 individuals survived 8 month when I sold most of them. One of those I kept got over 10 years old.
http://www.nachzuchtenregister.de/Fische/Calloplesiops_altivelis/T__Rower/t__rower.htm These where some of my observations:
In the beginning I fed them rotifers (Brachionus). I started feeding Artemia after 6 days.
The pelagic phase ended for the first larvae after 13 days. By this time the larvae are solid black. By the next day after beginning the benthic life these larvae finished metamorphosis. The head and all fins are black while the sides of the body are white. At this point they have already almost the typical shape of the adults. They also begin the typical up and down movement of the tail with the eye as pivot point you see on adults
After 18 days all larvae had changed to benthic life and finished metamorphosis.
At the time when the larvae switch from pelagic to benthic life they need plenty of hiding places! I lost most during or right after metamorphosis.
Most death during the following weeks occurred moments after feeding freshly hatched Artemia (I had the same issue with Amphiprion juveniles).
After 35 days the juveniles had a length of 7 to 8 Millimeters – the black begins to expand into the big white spot on the sides of the body.
After 40 days the typical white dots begin to show in the black regions of the head and body.
After 12 weeks at about 20 mm the eyespot forms on the dorsal fin.
After 20 weeks they accepted for the first time frozen food.
After 27 weeks the white side spot hat fully disappeared on the first fish.