I am feeding my fish from the frozen Salt Water Multi Pack (San Fran Bay Brand). Along with additional Mysis shrimp. There are a variety of four cubes in this product. The fish hate the sqiud and I know it does them no good, so that is out. Brine shrimp is in the pack. As brine shrimp as little nutritional value, this is an Omega-3 brine shrimp-so it seems to better. If it is useless, I am getting two cubes out of four for the fish. Does anyone have any info on the Omega-3 brine. Does it provide any nutritional value? Any other suggestions for frozen cubes? Thanks.