Is an ortholog of human POU3F4 (POU class 3 homeobox 4). Is predicted to have DNA-binding transcription factor activity. Is involved in excretion\; transdifferentiation\; and water homeostasis. Localizes to the cytosol and nucleus. Is expressed in head neurons\; tail neurons\; the body wall musculature\; the hyp7 syncytium\; and the intestine. Human ortholog(s) of this gene are implicated in sensorineural hearing loss.