Recirculating aquaculture systems (RAS) have gained increasing interest in recent years as
a means to intensify fish production while at the same time minimize the environmental …

Being one of the main environmental factors, the light factor influences many aspects of
animal life. Photoperiod, light intensity (illumination) and wavelength are the primary …

The effect of initial fish size (small with TL= 40.3±2.3 mm and W= 0.42±0.15 g, medium with
TL= 56.2±2.7 mm and W= 1.66±0.4 g, and big with TL= 71.0±3.2 mm and W= 2.95±0.65 g) …

The effect of stocking density on the rearing performance of pikeperch juveniles was studied.
Three separate experiments (I, II and III) were conducted with fish of an initial average body …

Predatory fish species play a key role in aquatic ecosystems by exerting top‐down control
on the food web. Also, their intra‐guild trophic interactions (ie competition) are crucial for the …

This study investigated the daily variations of stress markers namely plasma cortisol and
glucose and some humoral innate immune markers, including peroxidase, lysozyme and …

The large percids, including Perca and Sander species, are economically and ecologically
important species that inhabit large temperature regions of the Northern Hemisphere. In this …

Simple Summary Welfare is a key aspect in animal husbandry. However, in aquaculture,
scientifically validated and practically proven methods to evaluate fish welfare are largely …

Melatonin is considered as the time-keeping hormone acting on important physiological
functions of teleosts. While the influence of melatonin on reproduction and development is …

Juvenile pikeperch (Sander lucioperca) were reared for 58days according to one of the
following feeding regimes: control (fed once every day); 1+ 1 (fed every other day); 1+ 3 (one …