Answer:
Belief doesn’t have much role in science, except in the sense that nobody can check everything. But science is a set of methods for establishing knowledge that is as good a match as possible to the world we find ourselves in.
Explanation:
The most likely explanation for the variation is the offspring were produced from different combination of genes. A single pair of gold fish mentioned in the question means a male and a female gold fish. The two of them mated and contributed different genes to the fertilized fish eggs, this results in production of various body shape and colouration which is known as variation.
