Will C
Description from brineshrimpdirect
Golden Pearls
"Golden Pearls" - A New Brine Shrimp Replacement Diet
Golden Pearls is a revolutionary new larval diet that has successfully replaced live Artemia nauplii in marine fish hatcheries in Europe. A patented processing technique (agglomeration of micro-encapsulated particles) resulting in feed particles or "clusters" that resemble raspberries (under the microscope). Golden Pearls have tiny air pockets that keep the feed particles in the water column, not on the bottom of the tank, and mimics live brine shrimp nauplii.
Ingredients: Brine shrimp, squid, shrimp and fish protein, animal protein, purified fish oils, phospholipids, astaxanthin, vitamins and protected minerals, antioxidants, and immunostimulants.
Have also seen described elsewhere as rotifer replacement. It's sold according to micron size (obviously depending on what fish it's intended for.) All this to say live food replacement for rearing juvenile fish. Very interested to learn more from someone not selling anything... Having to raise artemia/rotifers I'd imagine has scared away one or two prospective marine fish breeders.