TRIDAN aims to decipher the dynamics and regulation of white adipose tissues (WAT) in female trout throughout their life cycle, particularly around spawning. By combining innovative 3D in situ imaging, statistical spatial analysis, and size-structured non-linear PDE modeling, the project investigates the balance between hypertrophy and hyperplasia in subcutaneous and visceral fat depots. Advanced parameter inference methods, including Physics-Informed Neural Networks (PINNs), will integrate experimental data with mathematical models to uncover regulatory mechanisms governing adipocyte size distributions and tissue remodeling.