Predicted to enable neuropeptide hormone activity; peptide hormone receptor binding activity; and pituitary adenylate cyclase activating polypeptide activity. Acts upstream of or within brain development and camera-type eye development. Predicted to be located in extracellular region. Predicted to be active in neuron projection and perikaryon. Is expressed in several structures, including basal plate midbrain region; male organism; nervous system; spleen; and trigeminal placode. Human ortholog(s) of this gene implicated in alcohol dependence. Orthologous to human ADCYAP1 (adenylate cyclase activating polypeptide 1).