Aquarium Fish What fish react to blacklight? March 9, 2026 by Tanp | Leave a Comment Certain fish species exhibit fascinating reactions to blacklight, primarily due to their biofluorescent properties. This phenomenon allows them to absorb ultraviolet (UV) light and re-emit it as visible light, often in vibrant colors. While not all fish are biofluorescent, many popular aquarium species and some wild populations display this trait. Understanding Fish Biofluorescence and Blacklight […] Read more ยป