Unfortunately the above posts are correct. It will occasionally work, but reduces survival by orders of magnitude. We experimented with this both in marines when I ran a marine hatchery, and also at the university when working with endangered fw species. I believe fry are especially cued in on the jerking motion of copepods etc, and there is an active avoidance response to anything that is just drifting. I think this is likely to avoid eating the suspended particles, sand, etc that drifts and can clog the intestines. Their intestines are not convoluted before meta in many species and every bite needs to be high quality. They also don't learn from others pre-meta. The eyesight in clowns is limited to about 1cm distance for prey tracking, and in the wild, they are dispersed across many miles so there is no socialization developed. They likely don't ever see another larvae through their development, so there has been no evolutionary pressure to develop a social learning response. Post meta is different. They can be trained. I got great conversion by tapping the glass with a pencil before feeding artemia, and rapidly they became so excited by tapping I could switch to dry immediately - the scarfed down anything drifting by once excited. In Bangaii's you might have some luck with this since they are much better developed at hatch than clowns, so you might be able to train them off artemia in a few days.
