as with most things in the scope of human endeavor,once something is shown to be possible,interest and effort becomes more intense and technology advances rapidly.soon a number of other aquarists,hobbyist and profes-sional,bent their attention to breeding clownfish.frank hoff and tom frakes,working for aquarium systems,joined the fledgling industry in 1974 just down the block from ma aqualife research hatchery,and we competed for quite a few years.then chris turk,who worked for me at various times and places in his youth,started a clownfish hatchery with sea world in california,and for a number of years these three companies were the only commercial breeders of ornamental marine fish.