I love your content. These are the rice fish tutorials we need!

I've been watching your videos again and again because I seem to learn something new each time I watch. Something that stood out to me today is how different the nature noises are from your first video to your most recent. It is like we can hear nature waking up from the winter and coming alive. I'm in Canada where it is still cold... hearing the bugs, frogs and birds in your videos makes me excited for spring to get here!

The floating ruler... brilliant!

Loving your videos. I’m in my third year of medaka tubbing

Thanks again for sharing! Just got a group of orange ines for our balcony. They are so peaceful to watch. You did a great job explaining your thoughts on green water, I couldn't have done better, and im a zookeeper!

In my opinion, healthy water for Medaka for fry isn't sterile water. Healthy water is a balanced, self-sustaining ecosystem. How I achieved this is heat & filtered natural light (via greenhouse), 3-4 ft high pot w/ thick but low plants @ floor to release oxygen (I prefer vallisneria, cabomba, weighted hornwort ... anything that doesn't require CO2 and much light but will release oxygen), a few floaters, I use water hyacinths), various micro fauna (seed shrimp, micro worms, tubifex & black worms, moina, etc.), & cycled green water to feed the micro fauna. Once this has found a balance in a month (use an airstone or fine mesh to avoid mosquito larvae when no fry), add fry. Remove any airstone or cover. You won't need to feed them (maybe a light sprinkle once in a while "just in case"). To check if you did this right, take a sample of water from top (a fast scoop of about half a cup ... i use a soup ladle). You should see various moving micro fauna. If floor vegetation is reaching top of water or floating plants get too thick, they may block the light and clear the water, you need sunlight at surface to keep water green for micro fauna. Mosquitos will start laying eggs but fry will eat them as they get bigger. Add low voltage fountain pump covered with filter floss near lower middle of pot and pointed at floor vegetation (this will release naturally occurring airbubbles on leaves) if fry are too small to control mosquitos.

Something I don't understand... I have an indoor tub with orange/white medaka, a tub with shimmering platinum medaka and a 20 gallon tank with solid orange and white medaka. All the same temperature, water quality and food. I'm giving them 13 hours of direct light and some additional ambient light. My orange/white medaka are producing eggs every day like clockwork, but no fish in my other containers are showing eggs. All fish purchased at the same time, at the same physical size and with equal numbers of males/females. Why is one group producing eggs and not the others? Any tips for getting them going? Thanks.