Species of the perch family, Percidae, can be distinguished from other freshwater-fish families in New Zealand as they all have large, thick scales, a lateral line, two dorsal fins, and gill covers with a broad, flat spine.
Using this item
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.
Source: R. M. McDowall, Reed field guide to New Zealand freshwater fishes. Auckland: Reed, 2000, p. 172