NEW EXPERIMENTAL INCUBATION UNIT FOR EGGS OF THE PERCH PERCA-FLUVIATILIS

A simple and inexpensive incubation chamber system for eggs of Eurasia n perch Perca fluviatilis is described, along with a general outline f or its use. The unit was constructed from two wooden frames, and had a plastic mesh bottom. A system of glass barriers was placed in the bot tom frame and formed a network of 10-18 individual chambers in two col umns. The unit was placed at an angle inside a glass aquarium during e gg incubation. There were no significant differences in percentage of eyed eggs incubated at different locations in the unit.