Cross-sectional images taken by three-dimensional micro-computed tomography. The diagram of the zebrafish shows where the two cross-sectional images A and B were taken. (A) The red two-headed arrow shows the area where body fat volume was measured (yellow). (B) The green line shows the boundary between the visceral fat and the subcutaneous fat (orange). The light green area indicates body fat outside the measuring area. The white arrow indicates the cleithrum.