Selected translated excerpt
Licensed Translation 01 | Medaka & Wild Genetic Disturbance
Selected Japanese passages in English; not the entire copyrighted article.
AQUAPEDIA / MAGAZINES / ENGLISH READING LIBRARY
English articles, guides & selected translations.
Browse 21 English reading pages for medaka and freshwater shrimp.
Translated English excerpts
Selected passages from Japanese scientific publications, where supported by documented reuse terms; each page explains the scope of the translation.
Selected translated excerpt
Licensed Translation 02 | Wild Minami-Medaka in Kagawa Pond Survey
Selected Japanese passages in English; not the entire copyrighted article.
Selected translated excerpt
Licensed Translation 03 | Northern Medaka in Nagano Pond Survey
Selected Japanese passages in English; not the entire copyrighted article.
Japanese magazine reading guides
Issue-level English editorial guides to history, breeders and traits. These are not page-by-page magazine translations.
Original English reading guide
Medaka Hyakka — Issue 01 (2012 inaugural)
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Hyakka — Issue 02 | Early Aurora & Lame
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Hyakka — Issue 03 | Black-Rim Origins
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Hyakka — Issue 04 | Tricolor History
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Hyakka — Issue 05 | Orochi & Black Diamond
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Shrimp Club — No. 01 (2011) | Red Bee Foundations
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Trip — Vol. 01 (2025–26) | Wazumi
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Advance — Vol. 01 | Long-Fin Types
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Advance — Vol. 02 | Daruma Medaka
Research background, history and source context, not a complete magazine translation.
Original English reading guide
Medaka Advance — Vol. 03 | Kagami Mirror Scales
Research background, history and source context, not a complete magazine translation.
Original English research articles
Source-linked Aquapedia companions about medaka genetics, breeding, ecology and freshwater shrimp.
Original English research article
Palaemon sinensis in Japan: new prefectural records
Fujii and Fuke reported the freshwater prawn Palaemon sinensis from three prefectures of Japan, with Yamanashi and Fukui described as first prefectural records. Such locality evidence is useful for shrimp identification and invasive-range mapping, but it does not independently demonstrate displacement of native species or aquarium compatibility.
English-language research companion
What medaka larval starvation research reveals about liver metabolism
In a controlled medaka larval experiment, starvation without supplemental glucose produced fatty-liver signs in 3%, 35% and 61% of larvae at four, seven and nine days after hatching. Proteomic results indicated altered amino-acid catabolism, fatty-acid beta-oxidation and lipid transport. The glucose comparator was an experimental control, not a recommended aquarium feed.
Original English research article
Treated wastewater and medaka fertilization: an experimental study
The investigators exposed medaka to treated wastewater and analyzed growth, spawning and potential water-quality/metabolic markers. Their Japanese abstract reports fewer fertilized eggs and reduced fertilization rates in the secondary-treated-water group. Associations with analytical markers do not establish which individual chemical caused the reproductive differences.
Original English research article
Which plants do wild medaka deposit eggs on in rice paddies?
Researchers studying naturally reproducing medaka in one rice paddy observed eggs deposited on Chara braunii, Trapa jeholensis and Spirogyra sp., but not on rice stalks or Monochoria vaginalis. The result highlights the ecological role of noncrop aquatic vegetation; it does not rank aquarium spawning mops.
Original English research article
Morning courtship and later egg deposition in wild medaka
An outdoor-pond study documented medaka courtship and spawning in the morning. Females then carried fertilized eggs before depositing them on surface-adjacent aquatic vegetation through the morning and afternoon. Timing varies with context, so the study is a husbandry research lead, not a strict ornamental breeding rule.
English-language research companion
Invasive Neocaridina and freshwater-shrimp conservation in Japan
Nagai and Imai published a study of how introductions of nonnative Neocaridina relate to changes in Japanese land-locked freshwater-shrimp fauna. The publication's title and scope are verified; detailed species, genetic and site-specific conclusions await a full-text audit. Ornamental trade names are not scientific identifications.
English-language research companion
Marker-assisted congenic medaka in about four generations
Researchers combined markers, genotyping and cryopreserved sperm resources to develop congenic medaka strains with HNI-II genetic regions on an HdrR-II1 background in roughly four generations. This scientific method should not be mistaken for proof of pedigrees for ornamental Kagami, Ryurin or Dragon Scale trade lines.
Independent English research
JMA medaka classification — an English research companion
Explains classification terminology and traits; not a translation of the copyrighted JMA manual.
Extended English reference notes
JMA classification — extended research notes ↗
Medaka Hyakka No. 21 — extended reading notes ↗
Contact the publisher for licensed full magazine editions or full English republication rights.