Formal identification keys are the scientifically accepted way to identify species. These will allow the identification of species which are unclear when using quick guides.
Key to native fish families (PDF 102 KB)
Key to bully species (PDF 179 KB)
Key to galaxiid species (PDF 275 KB)
Key to livebearing fish species (PDF 57 KB)
Key to salmonid species (PDF 58 KB)
Keys to cypranid species (PDF 2 MB)
Keys to eel, smelt, mullet and flounder species (PDF 2.1 MB)