Swine estrous cycle The estrous cycle in the pig averages 21 days but can range from 17 to 25 days. The first day of standing heat, when the female is receptive to the male and will stand to be mounted, is referred to as day 0.
A: Goldfish mate by spawning. The female releases her eggs into the water, and the male releases his sperm to fertilize the eggs. Goldfish reach sexual maturity at approximately 1 year of age. The mating ritual of goldfish involves the male chasing the female and nudging against her to prompt her to release her eggs.
Best Answer: goldfish eggs should hatch within four to five days. depending on the temperature of your tank. try this website http://www.flippersandfins.net/index.htm it gives you loads of info about goldfish and it will boost your knowledge best of luck with your goldfish eggs!