Image: Dissection of a Bluespotted Flathead - Gills The gills of
a fish are usually made up of filaments, arches and rakers. The
filaments are the obvious red structures in the image. The arch
is the boomerang-shaped structure that supports the filaments.
The rakers project from the opposite side of the arch from the
filaments. Learn more about these structures. - Mark McGrouther
- © Australian Museum Draw a diagram of your fish's gills. Why
are the gills red in colour? Why do the gills have a feather-
like appearance?