Abstract
This study describes effects of fish bone structures that Tetraodon Abei (in family Tetraodontidae) and sea bass have under two-dimensional hydrostatic pressure. In order to compression behavior of specimens which are duplicate sections of these fishes, We put hydrostatic test pressure on them through glass beads and measured strains with three axis strain gauges and 2D image correlation method. As a result, if bone area ratio increase, sea bass section's deformation stability improved but magnitudes of principle strain increased. Other hand, Tetraodon's deformation stability improved without increasing magnitude of principle strain. We estimated that fish bone structures of Tetraodon have superior characteristic for deformation stability under hydrostatic pressure.
