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Doryrhamphus excisus 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Syngnathiformes Syngnathidae

Scientific Name: Doryrhamphus excisus Kaup, 1856
Infra-specific Taxa Assessed:
Regional Assessments:
Common Name(s):
English Bluestripe Pipefish
Synonym(s):
Doryrhamphus excisus ssp. abbreviatus Dawson, 1981
Doryrhamphus excisus ssp. paulus Fritzsche, 1980
Doryrhamphus excisus ssp. excisus Kaup, 1856
Taxonomic Source(s): Dawson, C.E. 1985. Indo-Pacific Pipefishes (Red Sea to the Americas). The Gulf Coast Research Laboratory Ocean Springs, Mississippi, USA.
Taxonomic Notes: Dawson (1985) recognizes three subspecies, Doryrhamphus excisus abbreviatus (from the Red Sea), D. e. excisus (pan-Indo-Pacific), and D. e. paulus (endemic to the Revillagigedo Islands off the west coast of Mexico). In contemporary literature subspecific designations are no longer followed but as Dawson (1985) recommended more research is needed to understand the systematic status of these populations. All are treated here as subspecies of D. excisus.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2015-08-27
Assessor(s): Pollom, R.
Reviewer(s): Masonjones, H. & Ralph, G.
Justification:
Doryrhamphus excisus is listed as Least Concern. Although the population size and trend are unknown, there are no known direct threats to the species. Although localized coral habitat loss is occurring in its range, the species can utilize rocky reef habitat as well.

Geographic Range [top]

Range Description:Doryrhamphus excisus is widespread in the Indian Ocean, including the Red Sea and Persian Gulf (Randall 1995), and throughout the central Pacific to western America (Paulus 1999).
Countries occurrence:
Native:
American Samoa (American Samoa, Swains Is.); Australia (Ashmore-Cartier Is., Coral Sea Is. Territory, Lord Howe Is., Northern Territory, Queensland, Western Australia); Bahrain; Bangladesh; British Indian Ocean Territory (Chagos Archipelago); Brunei Darussalam; Cambodia; China (Fujian, Guangdong, Guangxi, Hainan, Shanghai, Zhejiang); Christmas Island; Cocos (Keeling) Islands; Colombia (Colombia (mainland), Malpelo I.); Cook Islands (Cook Is., Manihiki Is.); Costa Rica (Costa Rica (mainland)); Disputed Territory (Paracel Is., Spratly Is.); Djibouti; Ecuador (Ecuador (mainland), Galápagos); Egypt (Egypt (African part), Sinai); El Salvador; Eritrea; Fiji; French Polynesia (Marquesas, Society Is., Tuamotu, Tubuai Is.); Guam; Guatemala; Honduras (Honduras (mainland)); Hong Kong; India (Andaman Is., Andhra Pradesh, Daman, Diu, Goa, Gujarat, Karnataka, Kerala, Laccadive Is., Maharashtra, Nicobar Is., Orissa, Pondicherry, Tamil Nadu, West Bengal); Indonesia (Bali, Jawa, Kalimantan, Lesser Sunda Is., Maluku, Papua, Sulawesi, Sumatera); Iran, Islamic Republic of; Iraq; Israel; Japan (Honshu, Kazan-retto, Kyushu, Marcus I., Nansei-shoto, Ogasawara-shoto, Shikoku); Jordan; Kenya; Kiribati (Gilbert Is., Kiribati Line Is., Phoenix Is.); Kuwait; Macao; Madagascar; Malaysia (Peninsular Malaysia, Sabah, Sarawak); Maldives; Marshall Islands; Mauritius (Mauritius (main island), Rodrigues); Mexico (Baja California, Baja California Sur, Chiapas, Colima, Guerrero, Jalisco, Michoacán, Nayarit, Oaxaca, Sinaloa, Sonora); Micronesia, Federated States of ; Mozambique; Myanmar (Coco Is., Myanmar (mainland)); Nauru; New Caledonia; Nicaragua (Nicaragua (mainland)); Niue; Norfolk Island; Northern Mariana Islands; Oman; Pakistan; Palau; Panama; Papua New Guinea (Bismarck Archipelago, North Solomons, Papua New Guinea (main island group)); Philippines; Pitcairn; Qatar; Samoa; Saudi Arabia; Singapore; Solomon Islands (Santa Cruz Is., South Solomons); Somalia; South Africa (KwaZulu-Natal); Sri Lanka; Sudan; Taiwan, Province of China (Kin-Men, Ma-tsu-Pai-chuan, Taiwan, Province of China (main island)); Tanzania, United Republic of; Thailand; Timor-Leste; Tokelau; Tonga; Tuvalu; United Arab Emirates; United States Minor Outlying Islands (Howland-Baker Is., Johnston I., Midway Is., US Line Is., Wake Is.); Vanuatu; Viet Nam; Wallis and Futuna; Yemen (North Yemen, Socotra, South Yemen)
FAO Marine Fishing Areas:
Native:
Indian Ocean – western; Indian Ocean – eastern; Pacific – western central; Pacific – southeast; Pacific – northwest; Pacific – eastern central
Additional data:
Lower depth limit (metres):50
Upper depth limit (metres):2
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There have not yet been any dedicated surveys or population estimates for this species.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:Globally, Doryrhamphus excisus is known as a coastal marine species that lives in crevices in rocks and corals and areas beneath ledges (Grove and Lavenberg 1997). It is also known to occur in lagoons and seaward reefs (Lieske and Myers 1994) and occasionally hides in sea urchin spines (Paulus 1999, Purcell et al. 2010). It is found at depths of up to 50 m (Allen and Steene 1988), occasionally in pairs. The species feeds on planktonic crustaceans. Males carry the eggs in brood pouches and give birth to live young. Brood pouch size in pipefishes regulates fecundity, which is much lower than for a broadcast spawning species (Breder and Rosen 1966, Dawson 1985, Paulus 1999, Browne et al. 2008). The maximum recorded total length is 7.0 cm (Lieske and Myers 1994).

Many Doryrhamphus species are also known to be active cleaners, picking tiny parasitic crustaceans from other fishes, and adults work mostly in pairs (Kuiter 2000).
Systems:Marine
Movement patterns:Unknown

Use and Trade [top]

Use and Trade: This species is used regularly in the aquarium trade (Paulus 1999, Gopakumar 2004). It is also sold dried as medicine or curios in Asian markets (Paulus 1999).

Threats [top]

Major Threat(s): The only known threat to this species is habitat loss. Coral reefs are in decline globally and (Bruno and Selig 2007, Carpenter et al. 2008) , but this has not been quantified in most areas of this species' range and is happening at rates. The species is however able to utilize rocky reef habitat as well. 

Conservation Actions [top]

Conservation Actions: There are no species-specific conservation measures for this species, however it occurs in many protected areas.

Citation: Pollom, R. 2016. Doryrhamphus excisus. The IUCN Red List of Threatened Species 2016: e.T183214A54026319. . Downloaded on 15 October 2018.
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