Reporduction and juvenile arcas

[cathbad]

Does anyone have any experience or knowledge about arca reproduction in captivity? The tank is anout 1 1/2 years old and there were five turkey wings on the rock. About a month ago I noticed the larger (now about 2 cm in length) of the two in the photo, in the center. Yesterday I noticed the smaller (about 5mm in length), in the top left corner. Surely this is not a first.
Also I have tried to keep the tank as a Caribbean reef but it has been very difficult to stock it. I am now considering adding some Pacific species just so I can add some corals to the tank. What are your opinions, should I continue the effort of adding only Caribbean species or should I "just add whatever"?

 

[bang guy]

Every year I get a new crop of small Turkey Wings. I was told by a notable Marine Biologist that the larvae can't survive in a typical reef tank. They sure look small to me though.