What fine, comb-like structures in the gills do American Paddlefish use for filtering sustenance?

Answer

Rakers

The American Paddlefish strains vast quantities of zooplankton using fine, comb-like structures in its gills called rakers.

What fine, comb-like structures in the gills do American Paddlefish use for filtering sustenance?
speciesanimalComparisonfishpaddlefish