On the experimental feeding of sea bream (Sparus aurata L.) under aquarium conditions

Abstract

        Young sea bream (Sparus aurata L.) from the mid ­Adriatic coastal waters were kept in aquaria and fed on artificial and natural food. Comparative experimental feeding was carried out to contribute to our knowledge of their nutrition in captivity having in view their more efficient rearing. 

        Observations were carried out in an open circulation system (constant seawater flow). Environmental conditions were similar to those at the sea surface in the vicinity of the Institute.

        Artificial food used in this experiment was composed of fish meal, and wheat flour to which brewer’s yeast and vitamin mix were added. Hen egg was also added as a binding agent. Sardine were used as primary natural food, and when sardine were lacking, mussel or squid.

        Food consumption, growth in length and weight as well as their relation to temperature were studied in two fish groups.

        Conversion factor, weight-length relationship and con­dition factor were calculated for both groups. Growth coeffi­cient was graphically obtained.