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

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | 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 Sinh thái học

Biển Cùng sống ở rạn san hô. Tropical

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Point map | Những chỉ dẫn | Faunafri

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

Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: L_m ? range ? - ? cm
Max length : 35.0 cm SL con đực/không giới tính; (Ref. 95994)

Short description Khóa để định loại | Hình thái học | Sinh trắc học

Các tia vây lưng cứng (tổng cộng) : 8; Các vây lưng mềm (tổng cộng) : 10; Tia cứng vây hậu môn: 7; Tia mềm vây hậu môn: 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 | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối : Woodland, David J. | Người cộng tác

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)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 19 July 2017

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

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Trophic ecology
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Ecology
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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).

Thích nghi nhanh (Ref. 120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).

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

Siganus insomnis Woodland & Anderson, 2014