The preferred water temperature is 78 to 80 degrees Fahrenheit. Once hatching is completed, move the sac fry to circular tanks, rearing troughs or other such facilities until the fry are large enough to stock in a pond. If you use the traditional spawning methods for hatching catfish, do not drop those and implement these methods. However, in several cases, the spawning jar method has some advantages. If spawning other species such as Chinese carps, striped bass or hybrid striped bass, no new equipment is needed to include catfish.
Less space is needed for hatching jars as opposed to hatching troughs.
Less expensive to use this method in some cases. Three liter soft drink bottles can be used very satisfactory in the place of expensive spawning troughs or McDonald hatching jars. Less electricity is needed since no motor driven paddles are needed for agitation. There is less chance for disease infection on the eggs since the matrix tissue is removed. The spawning jar method offers some advantages over traditional means of hatching catfish.