Docs
Care guides
Years of hands-on notes on raising medaka in the UK — from setting up the first tank to coaxing colour out of the next generation.
15 May 2026
What is Medaka?
The medaka is an endemic species that has lived in the Japanese countryside, streams and ponds since ancient times. The wild species is...
15 May 2026
Understanding Medaka Genetics: A Guide to Colors, Patterns, and Traits
Unlock the secrets of medaka genetics! Learn how colors, patterns, and body shapes are inherited through generations. From dominant black genes to recessive Daruma traits, discover the science behind creating stunning varieties and fixing traits in your breeding lines.
15 May 2026
3 simple tips to increase the hatchability of Medaka eggs.
Hatching Medaka eggs is much easier than hatching other ornamental fish eggs, and the hatch rate is very high. Anyone can hatch Medaka...
15 May 2026
The Ultimate Guide to Raising Medaka Fry (Hariko): Preventing Common Deaths and Maximizing Survival
Struggling to keep your medaka fry alive? You're not alone. Over 80% of medaka fry deaths are caused by starvation - even when you think you're feeding them properly. Learn the secrets of raising these needle-like babies, including why aeration can actually harm them, how green water can boost survival rates from 20% to 70%+, and the critical feeding schedule that makes all the difference in the first two weeks.
15 May 2026
The Fascinating Life Cycle of Japanese Medaka Fish: From Tiny Eggs to Vibrant Adults
Discover how Japanese medaka fish transform from transparent eggs to colorful adults! This guide covers all life stages: hariko (needle fry), juvenile, and adult phases. Learn when colors appear (2-4 weeks), survival tips, and breeding secrets for vibrant medaka.
15 May 2026
How to Make Green Water for Medaka: The Complete Guide to Creating Nature's Perfect Fry Food
Turn your clear water green in just 3-7 days and boost medaka fry survival rates by 50%! Learn three proven methods to create nutrient-rich green water: the natural sunlight method, the quick Hyponex fertilizer technique, and instant results with live chlorella. Includes troubleshooting tips, optimal concentration guidelines, and indoor production secrets. Perfect for beginners struggling to raise healthy medaka fry.
15 May 2026
How to Care for Japanese Rice Fish (Medaka): A Beginner’s Guide
Japanese rice fish, commonly known as Medaka, are perfect aquarium pets for beginners due to their hardiness and peaceful nature. Here's everything you need to know to get started with Medaka care.