Where do the pale lines forming the net pattern appear relative to the scales?

Answer

They lie over the edges of the scales or highlight junction points.

The appearance of fine detail contributing to the 'wrought iron' look is heavily influenced by the interaction between the scales and the pale netting. The individual scales are small, helping to maintain a continuous surface texture. The pale lines that form the reticulated pattern do not simply sit in depressions; rather, they seem to overlay the edges of these small scales or specifically highlight the junction points where multiple scales meet. This results in a finely etched quality across the skin, making the visual clarity of this intricate characteristic highly dependent on excellent water quality and lighting in captive environments.

Where do the pale lines forming the net pattern appear relative to the scales?
animalfishtraitButterflyfishWrought Iron Butterflyfish