Traceable Species

Onaga (Ruby Snapper)

‘Ula‘ula koa‘e, Long-tail Red Snapper, Scarlet Snapper, Onaga or Hamadai (Sushi)

Onaga (Ruby Snapper)

Onaga take a relatively long time to mature. They reach sexual maturity once they grow between 23 and 35 inches in length, or four years of age. Female Onaga begin maturing in June, with fully ripe eggs in July. Peak spawning activity for does not happen until October, lasting about a month. This is most likely due to increases in water temperature and length of day. Their pelagic eggs hatch 17 to 36 hours after spawning.

Onaga (Ruby Snapper)

Food Info Onaga (Ruby Snapper)


  • Color: clear, light pink flesh  
  • Texture: soft and moist with firm flesh
  • Flavor: delicate, mild sweet flavor
  • Perfect serve: Onaga is most commonly served raw, baked, steamed or sauteed. It also makes great sashimi.
Species Range
Onaga (Ruby Snapper) range Source:
‘Ula‘ula koa‘e
Long-tail Red Snapper
Scarlet Snapper
Onaga or Hamadai (Sushi)
Hawaiian Bottomfish by Rod & Reel Sep 01 - Aug 31

Onaga, or Ruby Snapper, is named after its bright red appearance and has large eyes that allow it to live in the deep sea. It is better known by its Japanese name than Hawaiian name, ‘Ula‘ula koa‘e, which roughly translate as “the red fish with the tail of the Koa‘e bird”. It is one of Hawai’I’s “deep seven” bottomfish species, and ranges from the Indian to Pacific Ocean. Onaga inhabits rocky bottoms of continental shelves and slopes between 600 and 1,000 feet deep. It grows up to 30 pounds and 3 feet.

Onaga have a vivid scarlet color and a long slender tail whose tips may be red or black. The fish’s iris is usually a brilliant red as well. This long-lived species is often served raw as sashimi. In Japanese culture, having Onaga during weddings and New Year’s represents good luck, due to its red color.

Fishing Methods

{'fisheries': [<License: Hawaiian Bottomfish by Rod & Reel>], 'gear': <Gear: Deep-sea Rod & Reel>}

Deep-sea Rod & Reel

This fishery uses rods and reels to catch six species of snapper and one species of grouper that are called “bottomfish.”


Featured Harvester Bernie Berry

Mangrove Crab Harvester

Canavieiras, Brazil

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