The Philippine siyokoy in nineteenth-century folklore documentation

Record summary

Siyokoy is a Philippine sea-being label associated in later usage with a fish-like or amphibious humanoid. Nineteenth-century Filipino and Spanish-era folklore documentation provides a possible trail for studying how aquatic spirits, mermaid motifs and colonial classification were combined. The lead should be treated as a tradition and textual history rather than a series of verified creature encounters. Terminology is unstable: older sources may use different names or describe water spirits without the modern siyokoy image. A researcher should verify the earliest printed usage and its regional meaning.