Predicted to enable actin filament binding activity. Acts upstream of or within eye photoreceptor cell development. Located in actin cytoskeleton and stereocilium. Is expressed in retina. Used to study auditory system disease; retinal degeneration; and retinitis pigmentosa 30. Human ortholog(s) of this gene implicated in retinitis pigmentosa and retinitis pigmentosa 30. Orthologous to human FSCN2 (fascin actin-bundling protein 2, retinal). [provided by Alliance of Genome Resources, Apr 2022]