The Original Frozen Fish Food! Have a finicky eater? It will be love at first bite! San Francisco Bay Brand Sally's Frozen Brine Shrimp are readily recognized as a prey by all fish and invertebrates, will act as a great feeding stimulant and will serve as an excellent protein source for all your fish and invertebrates. For over forty years San Francisco Bay Brand Sally's Frozen Brine Shrimp has been widely recognized as the food of choice for tropical fish.