[Easy DIY] Make a Medaka Egg-Laying Mop with Everyday Materials! A Collection of Handmade Ideas
Thinking about making your medaka’s breeding season and home setup more comfortable? Did you know you can actually handcraft a spawning mop using simple, everyday materials to help them lay eggs safely? Creating a healthy environment where your beloved medaka can lay eggs with confidence is one of the key things to consider when keeping them.
In this article, we’ll show you how to make a medaka spawning bed that even beginners can try with ease.
Why not gift your medaka a wonderful environment with the unique creativity and ideas that only handmade gear can offer?
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[Easy DIY] Medaka Egg-Laying Mops Made from Everyday Materials! Handmade Idea Collection (1–10)
Spawning bed made of a pool cue and a scrubbing board

Here’s an easy-to-make spawning bed using familiar materials: a pool noodle and scrub brushes.
Slice the pool noodle into rings with a utility knife.
Cut the scrub brush into strips, bundle several together, and insert them into the noodle ring—done! The key is to insert a tight bundle of strips so there are no gaps.
Using pool noodles in various colors will make your tank more vibrant.
Have fun making it while looking forward to spawning!
A spawning bed made by combining sponges
https://www.tiktok.com/@kota_sakana/video/7353577945476156679You can make a combined hiding place and spawning substrate for medaka using 100-yen shop materials.
Buy a kitchen sponge and a thin hard sponge.
Cut the kitchen sponge in half.
Slice the thin hard sponge into narrow strips and bundle them together with a rubber band.
Then make a slit in the halved kitchen sponge and insert the bundled strips into it.
If you put it straight into the aquarium, the kitchen sponge’s buoyancy will keep it from sinking.
Hopefully the fish will hide in the shade of the kitchen sponge and lay their eggs there.
Hybrid-type spawning bed
https://www.tiktok.com/@matsura_medaka/video/7529102171388906759Depending on the variety, medaka prefer either tunnel-shaped or octopus-leg-shaped spawning mops.
So this spawning mop is a hybrid type: tunnel shapes and octopus-leg shapes alternate.
Fold the spawning material in half, and make cuts starting from the looped end.
Then, at the looped section below the cuts, separate every other loop.
Spread the parts you didn’t separate to form tunnel shapes, and you’re done.
Hope you get lots of eggs!
mattress-type spawning bed
@senafin0 What kind of spawning bed would be good?#Medaka#MedakaKeeping
♬ A Rainbow In The Clouds – BIG-8
Let me introduce a mattress-style spawning bed.
Prepare a hard sponge scrubber and a mesh draining stocking.
Cut the hard scrubber into four pieces and cover each with the draining stocking.
Cut and cover several pieces together, and you’re done.
Try floating them in the aquarium.
Because they’re flat, it’s easy to check for attached eggs, and they also help prevent the parent medaka from eating them.
Once eggs are attached, move the piece to a separate container and observe until they hatch.
It’s easy to make, so give it a try!
Korotama Ball Made with Tulle Fabric

Here’s how to make a Korotama Ball using tulle fabric.
This item is popular as a spawning bed for medaka (Japanese rice fish).
Cut the tulle fabric in half, then divide it into three equal sections.
Roll each piece to match the desired width as you adjust the rolling width.
Use a zip tie to secure the center firmly so it forms the shape of the number 8.
Cut the tips of the “8” with scissors.
While loosening the bundled sections, spread out the fabric to fluff it up.
By adding a weight or a floating ring, you can customize it to either sink to the bottom of the tank or float on the surface.


