Multiple views from a single scan of a 7-day post-hatching paddlefish ( Polyodon spathula ). Fixed in Bouin's, stored in 70% ethanol, stained with PTA. By adjusting the window and transparency functions, a volume rendering can be made to show a mix of internal and external structures. The lateral line receptors are especially prominent in these images, as are the nasal capsules and muscles. Voxel size 5.6 μm. Additional Files 1 and 2 are QuickTime movies of other PTA-stained paddlefish scans, one earlier (4 days post-hatching) and one later (27 mm total length).