:Greenbone

{{Short description|Species of ray-finned fish}}

{{About|the species|the film|Green Bones{{!}}Green Bones}}

{{Use New Zealand English|date=July 2024}}

{{Speciesbox

| image = Odax pullus (Greenbone).jpg

| image_caption =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Russell, B. |author2=Clements, K.D. |author3=Choat, J.H. |author4=Rocha, L.A. |author5=Myers, R. |author6=Lazuardi, M.E. |author7=Muljadi, A. |author8=Pardede, S. |author9=Rahardjo, P. |date=2012 |title=Odax pullus |volume=2012 |page=e.T190678A17774407 |doi=10.2305/IUCN.UK.2012.RLTS.T190678A17774407.en |access-date=20 November 2021}}

| taxon = Odax pullus

| authority = (J. R. Forster, 1801)

| synonyms =

  • Scarus pullus J. R. Forster, 1801
  • Callyodon coregonoides Parkinson, 1843 (ambiguous)
  • Odax vittatus J. Richardson & Solander, 1843
  • Coregonoides vittatus Solander, 1843 (ambiguous)

| synonyms_ref = {{FishBase|Odax|pullus|month=August|year=2019}}

}}

Odax pullus, known by the names greenbone, butterfish or its Māori language name mararī, or rarī,{{Cite journal |last1=Leach |first1=B. Foss |last2=Davidson |first2=Janet M. |last3=Allen |first3=Melinda S. |date=2025-03-13 |title=The estimation of live fish size from archaeological cranial bones of the New Zealand Greenbone Odax pullus |url=https://tuhinga.arphahub.com/article/135525/ |journal=Tuhinga |language=en |volume=36 |pages=1–22 |doi=10.3897/tuhinga.36.135525 |doi-access=free |issn=2253-5861}} is a species of ray-finned fish, a weed whiting from the family Odacidae, which is found around New Zealand. It is of minor importance to local commercial fisheries.

Description

Greenbone fish are protogynous hermaphrodites, beginning life as female and a proportion becoming male later in life. Young fish begin life with a golden-yellow colour, developing into a dark green-blue as the fish become juveniles. Adult fish are typically brown-yellow in colour.

This species reaches a length of {{convert|40|cm|in}} SL and has been recorded as reaching {{convert|1.5|kg|lb}}. Once the fish reach a length of {{convert|40|cm|in}}, approximately half of the fish develop into males, who have a bright-blue colour.

File:Odax pullus 191237471 (cropped).jpg|A younger golden-yellow Odax pullus in a kelp forest

File:Green-boned Butterfish, Lyall Bay, Wellington 6022, New Zealand imported from iNaturalist photo 24156535.jpg|As their name implies, the bones of the species are blue-green in colour

Range and habitat

Odax pullus is common in New Zealand coastal waters, particularly around the South Island.{{cite Q|Q114871191|pp=142-146}} Its range includes the Chatham Islands, Antipodes Islands and Bounty Islands but it is not present around the Three Kings Islands, where it is replaced by the endemic bluefinned butterfish O. cyanoallix.

It inhabits shallow, rocky areas with brown algae growth, mainly Carpophyllum.

Diet

Greenbones are primarily herbivorous, feeding mostly on brown seaweeds.

In a human context

Rarī is a traditional Māori food-source, and developed a folk reputation for being troublemakers. The name rarī over time became used to describe people who were troublemakers as well. The fish was more commonly eaten in southern New Zealand, and typically caught using large pole nets which used kelp as a camouflage.

Early European settlers similarly had a poor reputation for the fish, until a public health campaign in the 1920s by the Department of Health, who encouraged people to eat the fish due to its high levels of iodine.{{Cite journal |last1=Leach |first1=B. Foss |last2=Davidson |first2=Janet M. |last3=Allen |first3=Melinda S. |date=2025-03-13 |title=The estimation of live fish size from archaeological cranial bones of the New Zealand Greenbone Odax pullus |url=https://tuhinga.arphahub.com/article/135525/ |journal=Tuhinga |volume=36 |pages=1–22 |doi=10.3897/tuhinga.36.135525 |doi-access=free |issn=2253-5861}}

References