Notolabrus gymnogenis
{{Short description|Species of fish}}
{{Speciesbox
| image = Notolabrus gymnogenis (male).jpg
| image_caption = male
| image2 = Notolabrus gymnogenis.jpg
| image2_caption = female
| status = LC
| status_system = IUCN3.1
| taxon = Notolabrus gymnogenis
| authority = (Günther, 1862)
| synonyms = *Notolabrus gymnogenis (Günther, 1862)
- Pseudolabrus cyprinaceous Whitley, 1931
- Labrichthys gymnogenis Günther, 1862
- Pseudolabrus gymnogenis (Günther, 1862)
- Labrichthys nigromarginatus Macleay, 1878
- Pseudolabrus nigromarginatus (Macleay, 1878)
| synonyms_ref = {{FishBase|Notolabrus|gymnogenis|month=AugustIyear=2019}}
}}
Notolabrus gymnogenis, commonly known as the crimson banded wrasse, is a species of fish in the family Labridae. This colourful fish is endemic to Eastern Australia.
Description
This species grows to ~40 cm, and is like many wrasses, its colour changes over different stages of its life.{{cite web |title=Crimsonband Wrasse, Notolabrus gymnogenis (Günther, 1862) - Australian Museum |url=https://australianmuseum.net.au/crimsonband-wrasse-notolabrus-gymnogenis |website=australianmuseum.net.au |language=en}} Juveniles are greenish brown with rows of white spots along the sides. Females are reddish to brownish-orange with rows of white spots along the sides. Males are brightly coloured with red dorsal and anal fins, a red band around the rear of the body, a white caudal peduncle and a yellow caudal fin.{{cite web |last1=Bray |first1=Dianne |title=Notolabrus gymnogenis |url=http://fishesofaustralia.net.au/home/species/254#summary |work= Fishes of Australia |access-date=2 October 2018 |language=en | publisher = Museums Victoria}} The largest male recorded had a standard length of {{convert|23|cm|in}}.
Distribution
The fish is found in coastal waters of eastern Australia from Hervey Bay, Queensland to Lakes Entrance, Victoria and also in Tasmania. It has also been recorded from Lord Howe Island.
Behaviour
Males are territorial and will defend a territory against other males. They are protogynous being born female, and changing sex to a male later on in life, at a standard length of {{convert|13|-|20|cm|in}}.{{cite journal | author = Russell, B. C. | year = 1988 | title =Revision of the labrid fish genus Pseudolabrus and allied genera | journal = Records of the Australian Museum | volume = Supplement 9 | pages = 1–72 | url = https://media.australianmuseum.net.au/media/Uploads/Journals/17687/95_complete.pdf}} The males gather a harem of around 10 females and juveniles into their territory. This is an oviparous fish which forms pairs to spawn.
Habitat
Notolabrus gymnogenis are benthic coastal reef inhabitants and are commonly found on reef in New South Wales. Found in depths of {{convert|4|-|53|m|ft}}.{{cite journal |last1=Fetterplace |first1=Lachlan C. |last2=Turnbull |first2=John W. |last3=Knott |first3=Nathan A. |last4=Hardy |first4=Natasha A. |title=The Devil in the Deep: Expanding the Known Habitat of a Rare and Protected Fish |journal=European Journal of Ecology |date=28 August 2018 |volume=4 |issue=1 |pages=22–29 |doi=10.2478/eje-2018-0003|url=https://journals.ku.edu/EuroJEcol/article/view/11618 }}{{cite journal |last1=Fetterplace |first1=L |last2=Knott |first2=N |title=Offshore Reef Fishes of South Coast NSW |journal=Figshare |date=2018 |doi=10.6084/m9.figshare.5947012.v1}}