Some efferent connections of the superficial pretectum in the goldfish.

The diencephalic nuclei known as the lateral geniculate and rotundus in goldfish appear to belong to the pretectal region. They do not project to the telencephalon. A combination of degeneration and horseradish tract-tracing experiments show that that the latter nucleus projects caudally to the so-called mammillary body and to a precerebellar cell group-nucleus lateralis valvulae.