Acts upstream of or within bone development and negative regulation of bone trabecula formation. Predicted to be located in extracellular region. Predicted to be active in extracellular matrix and extracellular space. Is expressed in several structures, including cartilage; sensory organ; skeleton; trachea cartilaginous ring; and ventral body wall. Orthologous to human CHAD (chondroadherin). [provided by Alliance of Genome Resources, Apr 2022]