Research in and teaching of fish embryology has been emphasized by Creaser (1934, No. 4: 159-62) and more recently by Ingersol and Jones (1949, Proc. Oklahoma Acad. Sci., 30: 260-09) and Orton (1954, Turtox News, 32: 134-8). The zebra fish (Brachydanio rerio) is particularly recommended for such purposes because it is inexpensive, hardy and easy to breed. Roosen-Runge (1939, Biol. Bull., 75: 119-33) thoroughly described the early development of this species, and he and W. H. Lewis have prepared a film depicting the development of the egg (The Wistar Institute, Philadelphia). Techniques for obtaining eggs are described in the above papers as well as in hobbyist’s handbooks. This note offers a technique for controlling the time of daily spawning and improvements on the standard methods for egg collecting.