178 FISH HATCHERY MANAGEMENT 



SOMITE 



G. NINE DAYS AFTER FERTILIZATION, 51.4°F AVERAGE TEMPERATURE 

 (174.5 T.U.). 



FUTURE OPTIC LOBE 

 HIND BRAIN 



H. TEN DAYS AFTER FERTILIZATION, 51,5°F AVERAGE TEMPERATURE 

 (195,4 T.U.). 



OLFACTORY CAPSULE 

 FUTURE OPTIC LOBE 

 HIND BRAIN 



I. ELEVEN DAYS AFTER FERTILIZATION, 51, 7T AVERAGE TEMPERATURE 

 (216,6 T,U,). 



Figure 61. Continued. 



