AQUAPEDIA / MEDAKA FEEDING
Medaka nutrition atlas
A practical, referenced comparison of live prey and prepared foods. Evidence quality, life stage, nutritional balance and water quality come before brand promises.
PRIMARY EVIDENCE / BATCH 4
Species-specific correction and primary medaka studies
Corrected evidence note: the 2022 medaka custom-regimen allocation was 50% flakes plus 50% live Artemia; beef-liver paste was given to adult platyfish in the same cross-species study. The historical U.S. EPA manual and a broodstock fatty-acid experiment also show why prey size, hatch rates and seven-day survival need separate assessment. Original study methods ↗ · Read corrected US feeding research →
ADDITIONAL JAPANESE MEDAKA FOODS
Tetra, Sudo, Nichido and Comet
Original Japanese maker catalogues: 6 Tetra, 4 Sudo, 7 Nichido and 4 Comet / Itosui entries. See life stages, granule sizes, available guaranteed analyses and source limitations. No independent brand winner or verified US sales ranking.
FEED RESEARCH / RETAIL-LABEL REVIEW
Additional medaka-labelled diets: DAISO and Vet’s Labo
Four new, distinctly named product entries; existing CAINZ Pet’sOne labels were excluded as duplicates. Sources identify the listing brand rather than proving original manufacturer or diet efficacy.
UNITED STATES / KEEPER REPORTS
Food choices among U.S.-market keepers
14 food and culture observations: powder grades, Hikari First Bites, Golden Pearls, U.S. retailer formulas and clean live prey. This is not a popularity ranking.
EVIDENCE-FIRST RESEARCH
Choose a research collection
Natural & live foods
Artemia, Moina, Daphnia, paramecia, rotifers, worms and greenwater. Culture, harvest, food-size matching and risks.
Hikari & GEX feeds
Life stage, ingredients, published nutrition guarantees and Japanese catalog price snapshots, without brand rankings.
YEE brine shrimp eggs
Alibaba Artemia cyst listing, limitations, and practical lot-quality and hatch testing questions.
EVIDENCE-FIRST RESEARCH
What controlled medaka studies actually tested
In a 1992 study, casein-based feed and a flake-plus-Artemia diet performed adequately, but a flake-only diet did not; spinal deformities occurred in 5.4% of fish on the flake-plus-Artemia diet. Species-level 2022 methods correction: medaka received a 50% flake plus 50% live Artemia custom diet; beef-liver paste was part of the adult platyfish regimen, not the medaka ration. Comparative findings do not isolate Artemia effects.