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Gill raker

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Fish Head Gills Gas Exchange System Dissection GCSE A Level Biology NEET Practical Skills

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Gill raker | Wikipedia audio article

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spiracle, internal gill slit, gill chambers, gill rakers, gill arch, interbranchial septum

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How do fish breathe using gills?

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Gill raker Meaning

Gill rakers in fish are bony or cartilaginous processes that project from the branchial 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. Rakers are usually present in two rows, projecting from both the anterior and posterior side of each gill arch. Rakers are widely varied in number, spacing, and form. By preventing food particles from exiting the spaces between the gill arches, they enable the retention of food particles in filter feeders.
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