SRIF-like immunoreactivity in the brain and pituitary of Tinca tinca (Cyprinidae, Teleostei).

SRIF-immunoreactive perikarya occurred in the nucleus entopeduncularis, the nucleus praeopticus and praeopticus periventricularis, in the nucleus lateralis tuberis pars anterior, the nucleus ventromedialis, and in the nucleus posterior periventricularis. Additionally, SRIF-containing neurons were located in the nucleus dorsomedialis and dorsolateralis thalami. Weaklyimmunoreactive perikarya were found medially to the nucleus diffusus tori lateralis and in the rostral rhombencephalon, laterally to the fasciculus longitudinalis medialis, and dorsally to the fasciculus longitudinalis lateralis. SRIF-positive fibres could be found in the lateral and dorsal telencephalon, below most of the diencephalic nuclei, in the pituitary, the tectum opticum, the torus semicircularis, and in the lateral medulla oblongata.