Scarus dubius, also known as regal parrotfish, is a parrotfish endemic to the Hawaiian Islands.[1][2]

Scarus dubius
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Labriformes
Family: Scaridae
Genus: Scarus
Species:
S. dubius
Binomial name
Scarus dubius
Bennett, 1828

Description

The Hawaiian regal parrotfish grows to a maximum length of 35.6 cm.[3] Both male and female regal parrotfish have similar elongated, oval-shaped bodies. The males and females often display different color patterns and intensities. The males are usually more colorful than the females. The male's coloration can include a mix of vibrant blues, oranges, yellows, and greens. In contrast, the females are going to be more dull, expressing shades of green, blue, or brown, and may lack the prominent patterns seen in males.[4]

The regal parrotfish produces slimy secretions similar to those of some teleost fish. This slime is produced from goblet cells in the opercular region during the night, leading to the creation of cocoons around their bodies. Researchers have proposed that this is a defense mechanism against predators.[5]

Distribution and habitat

Within the Northwestern Hawaiian Islands, the regal parrotfish is found in abundance at depths ≥ 6 meters.[6] As a non-aquarium fish, the regal parrotfish has been found in reef and aggregate coral habitats and reef, and colonized volcanic boulder habitat types.[7] Around Oahu, the regal parrotfish has an estimated abundance of 72,140 ± 32.571 and a biomass of 3901 ± 1653 kg.[8]

References

  1. ↑ "WoRMS - World Register of Marine Species - Scarus dubius Bennett, 1828". World Register of Marine Species. Retrieved 2022-09-09.
  2. ↑ "Regal Parrotfish, Scarus dubius". www.keokistender.com. Retrieved 2022-09-09.
  3. ↑ Howard, Kathrine G.; Schumacher, Brett D.; Parrish, James D. (May 2009). "Community structure and habitat associations of parrotfishes on Oahu, Hawaii". Environmental Biology of Fishes. 85 (2): 175–186. doi:10.1007/s10641-009-9478-3. ISSN 0378-1909.
  4. ↑ "Regal Parrotfish, Scarus dubius". www.marinelifephotography.com. Retrieved 2023-08-04.
  5. ↑ Hendrickson, W. A.; Ward, K. B. (1975-10-27). "Atomic models for the polypeptide backbones of myohemerythrin and hemerythrin". Biochemical and Biophysical Research Communications. 66 (4): 1349–1356. doi:10.1016/0006-291x(75)90508-2. ISSN 1090-2104. PMID 5.
  6. ↑ Bose, K. S.; Sarma, R. H. (1975-10-27). "Delineation of the intimate details of the backbone conformation of pyridine nucleotide coenzymes in aqueous solution". Biochemical and Biophysical Research Communications. 66 (4): 1173–1179. doi:10.1016/0006-291x(75)90482-9. ISSN 1090-2104. PMID 2.
  7. ↑ Smith, R. J.; Bryant, R. G. (1975-10-27). "Metal substitutions incarbonic anhydrase: a halide ion probe study". Biochemical and Biophysical Research Communications. 66 (4): 1281–1286. doi:10.1016/0006-291x(75)90498-2. ISSN 0006-291X. PMID 3.
  8. ↑ Wiesmann, U. N.; DiDonato, S.; Herschkowitz, N. N. (1975-10-27). "Effect of chloroquine on cultured fibroblasts: release of lysosomal hydrolases and inhibition of their uptake". Biochemical and Biophysical Research Communications. 66 (4): 1338–1343. doi:10.1016/0006-291x(75)90506-9. ISSN 1090-2104. PMID 4.
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