I knew that goldfish lay eggs, but I was totally unaware of the procedures or what to look for.
We left the fish at a temp of 63F for about 2 weeks. I added a tank heater on low, but I noticed the fish were all nose first at the heater and the overall temp did not rise much.
We purchased a more efficient heater and when the tank was 68F, the fish started chasing each other around the tank at 7:30 in the morning. At first I did not realized what was going on. After my husband explained things to me, I decided to separate the more aggressive males out until I got home from work. Oh great, we created Spring in December.
By January, we have a 10 gallon tank set up with small polished stones on the bottom. This was a mistake because when the fry hatched and fell into the stones, I could not gauge what was needed. This batch did not survive. But not to worry, a week later the process stated over again with a bare bottom tank.
From what I read:
- Less of a chasing frenzy if you take the couple out and place them alone; first picture above.
- Fish spawn in the morning
- The adults will start eating the eggs after so remove them when they are finished
- Eggs are see through and hatch in about 5 days; second picture above
- Brine shrimp diet after the clear eggs disappear
One handy tool my husband put together was a tank vacuum made from ice maker water line. This tubing is thin that a small amount of water siphons through at a time without emptying the tank. He attached a one foot sturdy wire along side the last foot to keep it straight. This saved time when cleaning the tank bottom.
I have kept a dozen of the many that were hatched; they are a good size and growing fast.