I have researched the diameter of trout eggs. The deal is they are 3.5 mm to 5mm or .12 inches to .20 inches. The articles I read said that the eggs expand immediately upon contact with water . I am frequently guilty of over thinking fly fishing but wonder what is the size range we should tie our egg patterns. The flies available commercially are much larger than the actual size of the eggs. I know some anglers who use patterns smaller than 3mm. So is size important or should I just relax and tie up whatever looks good to me?