Catalogue entry no. 137 by Max Loehr:
137 Curved Fish with Jagged Dorsal Fin
Light olive-green and cream-colored translucent jade, showing signs of incipient calcification; traces of cinnabar on the right side. Uncommon features of this piece, in addition to the sawteeth of the dorsal fin, are the fluted tail fin and a row of large, overlapping scales which repeat the curve of the gill. The carving is identical on both sides. Conical perforation at the mouth. Shang or Western Chou(?).