Ready to dive into the fascinating world of koi spawning? Buckle up, because we’re about to embark on an egg-citing journey right in your own backyard!
Unlocking the Spawning Secrets: Ever wondered when your finned friends start their family planning? Well, it’s all about the temperature! When the water temperature is between 65° and 70°, it’s like a fishy signal for koi to get their spawn on. Here on the Colorado Front Range, that’s usually around late May or June.
Create a Spawning Sanctuary
How can you turn your pond into a hotspot for spawning success?
Make it a Chemical-Free Zone: Our fishy friends prefer their home without algaecide. Don’t worry; beneficial bacteria are welcome guests in this party!
Plant Power: Roll out the green carpet to help create a healthy environment for fish. Plants like floating hyacinths, Bulrush, and Pennywort provide the ultimate egg-laying real estate. The more plants, the more nursery room available.
Sun ‘n’ Shade: Fish, just like us, love a good sunbath. Have you ever noticed them sunning themselves? They do it a lot! They also need a shady retreat to cool off, especially when it is hot. Water lilies, are the perfect blend of sunshine and shade for our aquatic amigos!
How to Tell When Love is in the Water
- Fishy Flirtation: Don’t be fooled by their water tango! That’s just the male fish nudging the female to release her eggs. Sometimes it will look like the male fish are ganging up on one female, but it is part of normal spawning behavior.
- Foamy Fun: The male fish will fertilize the eggs. After the deed is done, your pond might resemble a bubble bath. Fear not; it’s just nature’s way of celebrating the miracle of life. You may also notice the fishy fragrance. It will subside in a few days. It’s all part of spawning.
- Egg-citing Discoveries: Keep your eyes peeled for tiny treasures! Koi eggs, no bigger than a pinhead, might be hiding in plain sight on your pond plants. They can be on the side of liner, down in the rocks and all sorts of places.
100,000 Fish Eggs??
Seriously! A mature female can produce up to 100,000 eggs! They are fertilized by male fish following them as they lay. The eggs are super sticky (underwater sticky miracle) and will stick to whatever they come in contact with; plants, pond edges, liner, rocks.
Will Koi Eat the Eggs?
Population Control: Worried about a fishy influx? Fear not! Mother Nature has her own family planning methods, and koi eggs are a tasty snack .
Some serious koi people put koi eggs mats into the pond and remove them to a different tank to raise them. But that is not easy! One has to know what to do with them and how to keep that tank safe for them.
Each year only a dozen of eggs in an ecosystem pond will make it to the next stage….
Sometimes koi will get into the skimmer and leave EGGS! So if you ever see this – you know!
Fish Fry?
In about a week, the minuscule eggs that weren’t enjoyed as an afternoon snack, will hatch into baby fish, otherwise knows as “fry.” They are super tiny, no longer than your fingertip. If you don’t see them, try staring into part of the water that has less circulation and you may see these tiny Titans!
Each year maybe 4 to 7 of them survive in our pond.
Kristi's Tips
If you want to see baby fish grown up in your pond, worry less about making it perfect. Lots of plant growth and places for fry to hide create the perfect koi nursery!
It’s ok that most koi eggs don’t make it to be full grown fish. It would over populate the pond with catastrophic results!
If you see a snake around, it means the pond is very healthy. However, snakes will eat small koi. If you, or someone you know can relocate them it will allow the fry to have a chance.