[Easy DIY] Make a Medaka Egg-Laying Mop with Everyday Materials! A Collection of Handmade Ideas

Acrylic yarn spawning bed

[Aquarium] Medaka Egg-Laying Substrate

Medaka tend to eat their eggs if they lay them on aquatic plants, so we make spawning mops to collect and isolate the eggs after they’re laid.

While commercial spawning mops are available, acrylic yarn is a simple, household alternative.

Choose a darker color to mimic plants.

Wrap the yarn many times around your hand (or another object) to make long strands, then secure one end with a cable tie.

After securing, the base will flare out; tie that base with another cable tie to finish.

Fix the mop in place with wire, and once the eggs are laid, retrieve the mop to collect them.

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Hirakawa Masako (Bōkarisuto: Sakata Mizumako)

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Sponge Korotama ball-shaped spawning bed

Shocking hatch rate?! How to make the ultimate spawning bed for medaka (Japanese rice fish)

We’ll use the material from a hard scrubbing-brush type of spawning mop to make a Korotama—ball-shaped spawning bed.

Cut the hard brush material into thin strips and, at the end, tightly fasten the center with a zip tie.

Once fastened, spread it out into a ball shape to finish.

You can also make it by leaving just the center uncut and fastening the zip tie around the part you left—either method works, so use whichever you prefer.

Sapphire-type medaka sometimes won’t lay eggs on regular spawning mops, so this is a recommended option for such varieties.

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Hirakawa Masako (Bōkarisuto: Sakata Mizumako)

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An egg-laying bed made with a draining filter

Can you make a medaka (rice fish) spawning bed with items you have at home? Easy DIY with 100-yen store goods!

Here’s a spawning bed made from a soft, egg-catching material: a strainer filter.

Cut the filter with scissors.

You can also tear it by hand, so use whichever is easier for you.

It’s easier to cut when you spread the filter out flat.

Medaka will lay their eggs on the fluttery strands.

If the mesh is too fine, the eggs may not catch well, so a stretchy type is recommended.

Give it a try!

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mayumi

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hemp twine

DIY medaka spawning bed

Here’s how to make a spawning mop for medaka fish using jute twine.

Cut the twine into short lengths and bundle them together.

Once bundled, tease the strands apart so the fibers become as soft and spread out as possible.

If you start loosening them and then continue while the twine is submerged in water, it goes smoothly.

Since it’s a natural material, I have a feeling the medaka will like it.

Jute twine is handy for tying up things like newspapers, can even be used as yarn for knitting, and you can find it at 100-yen shops—so give it a try!

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Hirakawa Masako (Bōkarisuto: Sakata Mizumako)

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Spawning bed made with a sponge

[Medaka] Building a Medaka Fish Farm with 10,000 Fish Season 1-19: A Simple Sponge Hack! How to Make a Spawning Bed That Yields Lots of Eggs!

Here’s how to make an egg-laying bed using a sponge.

First, prepare a dishwashing sponge and separate the hard and soft parts with a utility knife.

Cut the soft sponge in half, and make slits in the hard part.

Roll up the hard part with the slits, then insert it into the slits in the soft sponge.

Next, peel back the cut sections of the hard sponge.

Doing this will make it even easier for medaka (Japanese rice fish) to attach their eggs.

Give it a try!

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mayumi

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