However , killifish eggs are sold on a smaller scale as educational tools .
However , it soon became clear that the fish did not lay as many eggs at a time as would be needed for the idea to be economically viable , so the concept was dropped .
Killifish eggs are sold on a smaller scale as educational tools .
However , it soon became clear that the fish did not lay as many eggs at a time as would be needed for the idea to be economically viable , so the concept was dropped .