. English: 1-Six of a series of gill-rakers attached to the gill-arch, showing ythe projecting rows of hooks, enlarged 50 times. 2-Six of the hooks attached to the gill-raker, enlarged 178 times. 3-diagram of gill-rakers in cross section, showing angle at wich hooks project from their point of attachment in toward the throat cavity, and the current of water passing out from it. 1910. United States Fish Commission 2 Gills2

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Size: 2685px × 1861px
Photo credit: © The Picture Art Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., /, /., 1910., commission., fish, states, united