Maldives country information

Common names: Ori
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Woodland, D.J. and R.C. Anderson, 2014
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Type locality, Addu Atoll, Feydhoo I., BPBM 40390 (holotype of Siganus insomnis, 22.6 cm SL). It is particularly common in Faadhippolhu (= Lhaviyana) in the northern part of the Maldives, and in the southern part of the Maldives from Kolhumadula (= Thaa) and Addu (= Seenu) Atolls. It is caught either with gill nets or with a fine line and a small hook baited with bread dough; and can be caught both by day and night (Ref. 95994).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mv.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Woodland, D.J. and R.C. Anderson, 2014
National Database:

Common names from other countries

Ori, Leella, Oora, ... more

Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Acanthuriformes (Surgeonfishes) > Siganidae (Rabbitfishes)
Etymology: Siganus: Latin, siganus = a fish, rabbit fish; by the similarity of the nose (Ref. 45335); insomnis: Name from Latin 'insomnis' meaning sleep-less; referring to the nocturnal activity of this fish. It is an adjective agreeing in gender with Siganus (masculine)..

Environment: milieu / climate zone / depth range / distribution range Ecologia

marinhas associadas(os) a recifes. Tropical

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Indian Ocean: southern India, Sri lanka and the Maldives.

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 35.0 cm SL macho/indeterminado; (Ref. 95994)

Descrição breve Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 8; Raios dorsais moles (total) : 10; Espinhos anais: 7; Raios anais moles: 9. This deep-bodied species is distinguished from other siganids in that the whole of the sides of the body with the possible exception of the belly and a narrow strip adjacent to the base of the spinous dorsal fin (where a row of bronze spots may occur), are decorated with horizontal, parallel bronze bands extending the full length of the sides from nape and opercular slit back to and below the large yellow spot below the base of the soft dorsal fin; majority of these lines on the sides are complete (uninterrupted) along their length (Ref. 95994).

Adults live in schools, usually in coral and sandstone reefs and also seagrass beds; juveniles reportedly live in large estuaries such as Negombo Lagoon (5 km x 3 km). Apparently, estuaries are an important habitat for juveniles and sub-adults, with older fish moving to coral reefs. Feeds by scraping algae from rock and coral substrates and browsing on seaweeds and sea grasses. It supplements its diet with small items of animal tissue. A report on analysis of gut contents of specimens (2 - 27 cm SL), collected by trap and seine, from lagoons and coastal areas of Sri Lanka contain diatoms, green, blue-green, red and brown algae and a seagrass. It appeared that this species have a preference for feeding during the night when percentages of gut fullness between day and night catches were compared. It appeared to be nocturnal because it was mostly seen to be inactive during the day (Ref. 95994).

Life cycle and mating behavior Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Referência principal Upload your references | Referências | Coordenador : Woodland, David J. | Colaboradores

Woodland, D.J. and R.C. Anderson, 2014. Description of a new species of rabbitfish (Perciformes: Siganidae) from southern India, Sri Lanka and the Maldives. Zootaxa 3811(1):129-136. (Ref. 95994)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

Preocupação menor (LC) ; Date assessed: 19 July 2017

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

Harmless

Utilização humana

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01445 (0.00650 - 0.03213), b=3.08 (2.90 - 3.26), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Resiliência (Ref. 120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (33 of 100).

Siganus insomnis Woodland & Anderson, 2014