Hannia, , Vari, 1978

Shelley, James J., Delaval, Aurélien, Le Feuvre, Matthew C., Dempster, Tim, Raadik, Tarmo A. & Swearer, Stephen E., 2020, Revision of the genus Hannia (Teleostei, Terapontidae), with description of a new species, Hannia wintoni, from the Kimberley, Western Australia, Zootaxa 4869 (4), pp. 562-586 : 573

Key to the species of Hannia

Each of the characters used in this key displays some degree of overlap between the two species. In each case, multiple characters are provided to distinguish between species and should be considered in combination. Considering all diagnostic characters presented, the key is tentatively considered valid for both juveniles and adults, although the majority of specimens examined were adults. All characters can be measured or observed in the field. This key is most accurate for freshly caught individuals or those fixed in 10 % formalin, as ethanol-fixed specimens may be affected by shrinkage.

1 Large size (up to 200 mm SL); posterior nape profile slightly convex (humped); pectoral fin rays usually 15 (13–16); preopercular spines usually exceeding 16 (16–27); postorbital length usually> 35.0 % HL (Roe River and Prince Regent River, northwestern Kimberley)................................................................. Hannia wintoni sp. nov.

- Small bodied relative to congener, (up to 110 mm SL), often <80 mm SL; nape profile straight between posterior occiput and first dorsal spine; pectoral fin rays usually 13 (13–15); preopercular spines usually less than 16 (0–16); postorbital length usually <35.0 % HL (streams between the Fitzroy River and Glenelg River, western Kimberley)....................................................................................................... Hannia greenwayi Vari, 1978