The hybrid tiger muskellunge (male northern pike x female muskellunge) was reared intensively on artificial diets during 1976 and 1977. The total number of 15-23 cm fingerlings produced during 1976 and 1977 were 88,000 and 109,00 hybrids respectively. Survival from eggs ranged from 11-15% for 1976 and 22% for 1977. The improved survival during 1977 was attributed to better egg quality and modifications of feeding techniques which resulted in a lower incidence of cannibalism. Growth rates averaged between 0.140 and 0.175 cm/day during 1976 and 0.180 cm/day during 1977. Improved feeding techniques again were responsible for the better growth rates. Columnaris and bacterial gill disease caused mortalities but these mortalities were low in comparison to the total loss due to cannibalism.
