Diatom
An unstained bright field light micrograph showing a diatom, a type of unicellular algae, frequently observed in skin scrape samples from fish. These organisms possess intricately patterned silica cell walls and are typically non-pathogenic, serving as indicators of water quality and environmental conditions.
Host: Algae
Host Tissue: Whole Animal
Photographer / Illustrator: Stephen Atkinson
Image Type: Light Micrograph (Bright Field, Unstained)