Predicted to enable phosphatidylinositol-3,4,5-trisphosphate binding activity and phosphatidylinositol-3,4-bisphosphate binding activity. Predicted to be involved in several processes, including multi-organism membrane organization; neuromuscular synaptic transmission; and positive regulation of supramolecular fiber organization. Predicted to be located in plasma membrane and stereocilium shaft. Predicted to be active in neuromuscular junction and recycling endosome. Predicted to colocalize with clathrin-coated pit. Orthologous to human FCHSD2 (FCH and double SH3 domains 2). [provided by Alliance of Genome Resources, Apr 2022]