Fish Family Finder is an interactive aid to the identification of the families of fishes known to occur in the marine and freshwater regions of Australia. Because of the great variation in form within some families and the simplified nature of this key, not all species will be easily recognised at the family level. To begin choose the figure which best fits the fish you are trying to identify.
5 gill openings laterally on either side of head or body
6-16 gill openings on either side of head or body, sometimes tiny
5 pairs of gill openings on underside of head
one gill opening on either side, sometimes tiny, or only single opening on throat
