Predicted to enable several functions, including histone demethylase activity; methylated histone binding activity; and transcription coregulator activity. Involved in brain development and positive regulation of DNA-templated transcription. Acts upstream of or within embryonic organ development; posterior lateral line neuromast deposition; and regulation of neuron apoptotic process. Predicted to be located in nucleolus. Is expressed in head; otic vesicle; posterior lateral line system; and tail bud. Human ortholog(s) of this gene implicated in syndromic X-linked intellectual disability Siderius type. Orthologous to human PHF8 (PHD finger protein 8).