Rainbow trout scale, SEM
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Rainbow trout scale, SEM
Rainbow trout scale. Coloured scanning electron micrograph (SEM) of a rainbow trout (Oncorhynchus mykiss) scale. Fish scales are are classified by shape. Trout scales are known as cycloid (curve edged). As the fish grows, the scale increase in size and growth rings called circuli become visible. During cooler months of the year the scale grows more slowly and the circuli are closer together leaving a band called an annulus. By counting the annuli it is possible to estimate the age of the fish. Magnification: x36 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9195163
© POWER AND SYRED/SCIENCE PHOTO LIBRARY
Annular Circuli Concentric Growth Rings Ichthyology Overlap Overlapping Ringed Rings Scale Annulus Oncorhynchus Mykiss Rainbow Trout Trout
EDITORS COMMENTS
This print showcases the intricate beauty of a rainbow trout scale, captured using a scanning electron microscope (SEM). The vibrant colors and detailed structure of the scale are brought to life in this colored SEM image. Rainbow trout scales belong to the cycloid category, characterized by their curved edges. As these fish grow, their scales increase in size, revealing growth rings known as circuli. These circuli become visible on the surface of the scale and form bands called annuli. Interestingly, during colder months when growth is slower, the circuli are closer together, resulting in more pronounced annular bands. Counting these annuli provides valuable insights into estimating the age of a fish. By examining this microscopic world within each scale and counting its concentric rings or annular patterns, scientists can determine how old a rainbow trout may be. The magnification used for this print allows viewers to appreciate every minute detail at 36 times its original size when printed at 10 centimeters wide. This image not only highlights the biological marvels found within nature but also serves as a reminder of our ability to unravel secrets hidden beneath even seemingly ordinary surfaces. Immerse yourself in this mesmerizing glimpse into ichthyology and wildlife with Science Photo Library's stunning portrayal of a rainbow trout scale through an SEM lens.
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