NUTRITION AND FEEDING 223 



Figure 71. Rainbow trout with liver lipoid degeneration (ceroidosis) of 

 increasing severity from top to bottom. Note yellowish- brown coloration of 

 livers of middle and bottom fish. (Courtesy Dr. P. Ghittino, Fish Disease 

 Laboratory, Tonino, Italy.) 



Figure 72. Folic acid-deficient (top) and control (bottom) coho salmon. 

 Note the extremely pale gill, demonstrating anemia, and exophthalmia in 

 folic acid-deficient fish. (Courtesy Charlie E. Smith, FWS, Bozeman, 

 Montana.) 



