Gill raker

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Gill rakers in fish are bony or cartilaginous processes that project from the branchial arch (gill arch) and are involved with suspension feeding tiny prey. They are not to be confused with the gill filaments that compose the fleshy part of the gill used for gas exchange.

Excerpt from the Wikipedia article “Gill raker”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Rob and Stephanie Levy, CC BY 2.0, via Wikimedia Commons.