Predicted to enable calcium ion binding activity; intracellular calcium activated chloride channel activity; and volume-sensitive chloride channel activity. Predicted to be involved in chloride transport. Predicted to act upstream of or within several processes, including cell-cell adhesion; cell-substrate adhesion; and filopodium assembly. Predicted to be located in filopodium membrane; filopodium tip; and synapse. Predicted to be part of chloride channel complex. Predicted to be active in plasma membrane and smooth endoplasmic reticulum membrane. Orthologous to human TTYH1 (tweety family member 1). [provided by Alliance of Genome Resources, Apr 2022]