A model system for keeping spawners of wild and domestic fish before artificial spawning

In this paper we present a system with controlled temperature and photoperi od for keeping breeders before their artificial spawning and give a general outline of its use. The advantages of this system were: utility, small are a in which it was placed, wide range of temperature and photoperiod, possib ility of worked tanks together or alone and in open, closed or semi-closed systems, cheap to construct and with low running costs. Additionally, this unit was tested for artificial spawning for several wild and domestic Europ ean cyprinid and percid fish species, as well as burbot, not uncommonly in different periods than the time of their natural spawning. (C) 1999 Elsevie r Science B.V. All rights reserved.