Preliminary investigations on husbandry, nutrition and growth of glass eels and elvers, Anguilla anguilla L.

Abstract. Some effects of husbandry and feeding on growth of glass eels and elvers of the European eel. Anguilla anguilla L., were investigated. In the first 7 months after arrival the recorded mortality amounted to 34% of the initial population. due to escapes and possibly cannibalism the observed survival after 7 months was only 21% of the initial population.
Mean growth rate of the whole population was 7.1 g day⁻¹ kg^−0.8. Growth proved to be highly variable. Growth rate was clearly affected by feeding level but not by initial stocking density.
Maximum growth rate was approximately 8g day, ¹ kg^−0.8 with feed conversions of 1.7–2.0. An optimal feeding level of 7.5g day¹ kg^−0.8 resulted in feed conversions of 1.3–1.6.