A stereotaxic atlas for the telencephalon of the Siamese fighting fish (Betta splendens).

1. A stereotaxic technique for electrode positioning in the telencephalic nuclei of the Siamese Fighting fish (Betta splendens) is described. 2. The forebrain atlas was based on paraffin-embedded, in situ-sectioned, Nissl-stained material. Brain measurements were corrected for tissue shrinkage due to histological procedures. The atlas and methods have already been tested and have shown good accuracy and reproducibility.