MICHEL DELARUE, ISM / SCIENCE PHOTO LIBRARY MICHEL DELARUE, ISM / SCIENCE PHOTO LIBRARY
Trout egg hatching. Light micrograph of a trout (subfamily Salmoninae) fry hatching from its egg. This fry formed from an embryo, and will eventually develop into an adult fish. Trout is a term used for several species of mostly freshwater fish, closely related to salmon (family Salmonidae).
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