Okay, two more pictures.
It's getting harder to take a close up shot because they are moving faster now.
Tim -
When I said "try for the next batch", I meant that I would let the parents spawn again in a month by putting them back together.
If you get a few from me, there is no real assurance that you end up with a pair. However, if you have 4 or 5 fish, the chances are good that you will end up with a pair. You just need to find good homes for the rest of your fish. To be honest with you, a lot of people lose outcast anyways because they tend to die in hiding.
If you want a pair just to have a pair of cardinalfish, you can put them in your 75G. If you want to breed them on the other hand, you need to put them in their own tank. It's a nightmare to have to catch fish out of a reef tank. I have mine in a 20GL bare bottom tank (with sea urchin poop substrate now.) It's a small enough tank to keep it well maintained, but it's long enough that I can put a divider easily to separate a male from a female after spawning or the male from his babies.
You don't need a sea urchin for your cardinalfish. I just opted for a live long-spined sea urchin because it's a natural shelter for the fry. A sea urchin poops a lot. It will put stripes on your rocks by eating coralline algae which is its natural food. It bulldozes frags off your rocks, too. It may remove some hair algae in the process, but it is not the most desirable thing in your reef tank.
If you let the male release fry in your reef tank, with or without a sea urchin, you will lose the fry to your female or to other tank mates who will eat the fry as they come.
Weaning is done very gradually. Cardinalfish fry are notorious for not accepting anything but live food. Some fry may take a very long time to get weaned. Most breeders usually start mixing live and frozen bbs one month after their release. Some people tell you to start mixing after two weeks to get the fry used to frozen ones although they will refuse to eat frozen bbs at that time. You need to feed live bbs a few times a day (at least twice a day) and you cannot skip a day, either, just because you are busy.
Tomoko