Rearing of coregonid (Coregonus schinzi palea Cuv. et Val.) larvae using dry and live food: III. Growth of fish and developmental characteristics related to nutrition

Data from 2 years of experimentation on rearing of coregonid larvae are presented. Control fish were fed live Artemia nauplii and small cladocerans and reached 188 mg and 64 mg in 1983 and 1984, respectively. Growth of fish was considerably improved when they were fed dry diets at a water temperature of 18°C in 1984. Attractants (betaine, inosine and amino acids) added to dry diets had no significant effect on fish growth and survival. In the 1984 experiment, fish fed dry diets reached 90–103 mg within 26 days and survival was 43–52%. The swim bladder was filled at a fish size of 25–35 mg and there was no difference in the morphology of the digestive tract between fish fed zooplankton and those fed dry diets.