Explain, from the point of view of the laws of evolution, the appearance of a dissecting coloration in striped butterfly fish.

1) mutations occurred in the original population, leading to the appearance of a color that divides the contour of the animal;
2) the dissecting coloring made the animal invisible against the background of the environment and increased the chance of survival in the struggle for existence;
3) as a result of natural selection, the mutation is fixed, spread due to reproduction in the population, which led to a change in its gene pool.