"Hiramasa Studies" is a structured archive based on primary data from navigation, fishing operations, and underwater observations conducted by STINGRAY, a fishing charter operating in offshore Japan. It records Yellowtail Kingfish (Hiramasa) from the perspectives of ecology, behavior, and culture. This is not a collection of fishing reports, but an archive designed to capture "why things happen" and "under what conditions they occur" as reusable conceptual models.
*This archive includes both widely shared knowledge and hypothesis-based interpretations derived from field observations. Each article clearly distinguishes between facts, tendencies, and interpretations.
Entry Points
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Species and Classification
Scientific names, taxonomy, naming conventions, and classification are examined from both academic research and practical field perspectives.
URL: /en/hiramasa/studies/
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Field Notes from Offshore Japan
Currents, underwater structure, feeding zones, and reproducible fishing approaches are organized into a structured field record.
URL: /en/hiramasa/field/
Latest Articles
- Why Yellowtail Kingfish Do Not Appear on Sonar｜"The Invisible Target" Field
- Phylogenetic Divergence of Yellowtail Kingfish (Seriola lalandi): The Three-Lineage Hypothesis Studies
- Feeding Structure of Large Yellowtail Kingfish｜Upcurrent Dynamics and Formation Conditions in the Genkai Sea, Japan Field
- Are There Two Types of Yellowtail Kingfish?｜Migratory "Kachi" and Resident "Itsuki" Field
- Why Yellowtail Kingfish Are Rare in Aquariums｜Can the "Sprinter of the Sea" Live in Artificial Environments? Field
- Yellowtail Kingfish "See" the World｜What This Fish Perceives—and What It Does Not Studies