Siganus canaliculatus

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Siganus canaliculatus
Siganus canaliculatus, Kampuan.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Acanthuriformes
Family: Siganidae
Genus: Siganus
Species:
S. canaliculatus
Binomial name
Siganus canaliculatus
(Park, 1797) [2]
Synonyms [3]
  • Chaetodon canaliculatusPark, 1797
  • Amphacanthus guttatus oramin Bloch & Schneider, 1801
  • Siganus oramin(Bloch & Schneider, 1801)
  • Teuthis oramin(Bloch & Schneider, 1801)
  • Amphacanthus dorsalis Valenciennes, 1835
  • Teuthis dorsalis(Valenciennes, 1835)

Siganus canaliculatus, the white-spotted spinefoot, white-spotted rabbitfish, pearly spinefoot, seagrass rabbitfish, slimy spinefoot or smudgespot spinefoot is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is native to the western Pacific Ocean and Indian Ocean where it occurs on reefs and in lagoons.

Contents

Taxonomy

Siganus canaliculatus was first formally described in 1797 as Chaetodon canaliculatus by the Scottish explorer Mungo Park with the type locality given as Bengkulu Province on Sumatra. [4] This taxon is largely sympatric with the mottled spinefoot ( Siganus fuscescens ) and these taxa are also very similar in appearance. Molecular analyses in 2011 found that there were three separate lineages within S. canaliculatus and S. fuscescens, that these lineages interbred and that each lineage had specimens which referred to either taxon, this suggests that S. canaliculatus is a junior synonym of S. fuscescens. [5] This is not the position taken by FishBase [6] or Catalog of Fishes . [4] The specific name canaliculatus means “grooved”, a reference to the grooves in the fin spines. Park did not know that, like all rabbitfishes, these spines contained venom glands for defence. [7]

Description

Siganus canaliculatus has a moderately slender, laterally compressed body, the standard length being 2.3 to 2.8 times its depth. The dorsal profile of the head is weakly to notably concave over the eyes with a pointed snout. The front nostril has a flap, in juveniles this covers the rear nostril, although it becomes shorter as the fish grows and is completely absent in the oldest fishes. [8] The dorsal fin has 13 spines and 10 soft rays while the anal fin has 7 spines and 9 soft rays. [3] The front spine on the dorsal fin points forwards. The caudal fin is nearly emarginate in smaller individuals of less than 10 cm (3.9 in) standard length becoming forked in larger fish. [8] This species attains a maximum total length of 40 cm (16 in), although 20 cm (7.9 in) is more typical. [3]

The colour and pattern of the white-spotted spinefoot is very variable. It can be greenish grey to yellow brown and is marked with 100-200 perlescent blue to whitish spots on the nape and anterior part of the body, these are similar in size to a match-head on the lower flanks. There are 2 to 3 rows between the first spine of the dorsal fin and the lateral line, which are roughly one sixth the size of the eye, and another 10 or so rows between the uppermost point of the lateral line and the base of the first spine in the anal fin. Alarmed or injured fishes adopt a pattern where their flanks are mottled with patches of light and dark brown and cream, forming a pattern of 6 or 7 uniformly spaced, dark oblique zones with lighter zones of similar breadth separating them. There is normally dark spot immediately to the rear of the upper end of gill opening, this spot is similar in size to the eye, and a thin bar along the upper margin of the operculum. [8]

Distribution and habitat

Siganus canaliculatus has a wide Indo-Pacific distribution, ranging from the Persian Gulf to the Philippines and New Guinea, north to the Ryukyu Islands and south to northern Australia. [1] It is found at depths down to 50 m (160 ft) [1] with adults living in inshore waters, on algae reefs, in estuaries and in large lagoons where there is algae growing over rubble. The juveniles live in coral reef flats and shallow bays. [3]

Biology

Siganus canaliculatus is said to be able to tolerate more turbid waters than the closely related S. fuscescens and may be found near river mouths, particularly where there are beds of sea grass. The adults can sometimes be found quite far offshore, in clear, deep waters. The juveniles form very large schools, which reduce in size as the fishes mature; adults occur in groups of around 20 individuals. [3] When spawning, the adults gather in much larger aggregations. [8] These fishes have only been observed to spawn from April to July. However, gonadosomatic indices suggest that there is another, less defined spawning period in November. Spawning events are synchronised with the lunar cycle. A mature female can spawn a number of times in a season, laying up to a million eggs. [1] This is a herbivorous species which feeds on benthic algae and, to a lesser extent, on sea grass. [3] This species, like other siganids, has venom glands located in grooves on the spines of the dorsal and anal fins. [7]

Fisheries

Siganus canaliculatus is an important quarry species for commercial fisheries. In the Persian Gulf it is considered to be a good quality food fish, even though it is a rather small species. It is caught using bottom trawls and seine nets in coastal waters wherever it occurs. In the Persian Gulf, this species is caught largely by trapping in fences made up of nets in the inter-tidal zone and dome-shaped metal traps called gargoors. The fish landed are sold fresh in large numbers. This species is also taken as bycatch. The white-spotted spinefoot has been used for mariculture in some areas in which it occurs because it has herbivorous habits, grows rapidly and is economically valuable. In some parts of this species' range the stock has been overfished. [1]

Related Research Articles

<span class="mw-page-title-main">Rabbitfish</span> Genus of fishes

Rabbitfishes or spinefoots, genus Siganus, are perciform fishes in the family Siganidae. It is the only extant genus in its family and has 29 species. In some now obsolete classifications, the species having prominent face stripes—colloquially called foxfaces–are in the genus Lo. Other species, such as the masked spinefoot, show a reduced form of the stripe pattern. Rabbitfishes are native to shallow waters in the Indo-Pacific, but S. luridus and S. rivulatus have become established in the eastern Mediterranean via Lessepsian migration. They are commercially important food fish, and can be used in the preparation of dishes such as bagoong.

<span class="mw-page-title-main">Foxface rabbitfish</span> Species of fish

The foxface rabbitfish, also known as the foxface, black-face rabbit fish, badger fish or the common foxface is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Indian and Pacific Oceans. It can be found in the aquarium trade.

<span class="mw-page-title-main">Orange-spotted spinefoot</span> Species of fish

The orange-spotted spinefoot, also known as the deepbody spinefoot, gold-saddle rabbitfish, golden rabbitfish, golden-spotted spinefoot, goldlined spinefoot or yellowblotch spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the eastern Indian Ocean and western Pacific Ocean. It occasionally makes its way into the aquarium trade.

<span class="mw-page-title-main">Masked spinefoot</span> Species of fish

The masked spinefoot, also known as the masked rabbitfish, bluelined rabbitfish, blue-lined spinefoot, decorated rabbitfish or maiden spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It occurs in shallow, coral-rich areas of clear lagoons and seaward reefs of the Indo-West Pacific region.

<span class="mw-page-title-main">Blue-spotted spinefoot</span> Species of fish

The blue-spotted spinefoot, the coral rabbitfish, coral spinefoot, ocellated spinefoot or orange spinefoot is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Indo-Pacific where it is often caught as a food fish and occasionally as an aquarium fish.

<span class="mw-page-title-main">Streaked spinefoot</span> Species of fish

The streaked spinefoot, also known as the Java rabbitfish, blue-spotted spinefoot, blue-spotted trevally, Java spinefoot or white-spotted rabbit-fish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found throughout most of the Indo-Pacific region.

<span class="mw-page-title-main">Streamlined spinefoot</span> Species of fish

The streamlined spinefoot, also known as the forktail rabbitfish, schooling rabbitfish or silver spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Indo-Pacific region.

<span class="mw-page-title-main">Dusky spinefoot</span> Species of fish

The dusky spinefoot, also known as the squaretail rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is native to the western Indian Ocean which has spread to the Mediterranean Sea through the Suez Canal. Its fin spines contain venom. It is regarded as a food fish.

<i>Siganus insomnis</i> Species of rabbitfish

Siganus insomnis, the bronze-lined spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the northern central Indian Ocean. It had formerly been confused with S. lineatus, but was recognized as a separate species in 2014.

<span class="mw-page-title-main">Golden-lined spinefoot</span> Species of fish

The golden-lined spinefoot, also known as the goldlined rabbitfish or lined rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the tropical Western Pacific and along the coasts of northern Australia.

<span class="mw-page-title-main">Vermiculated spinefoot</span> Species of fish

The vermiculated spinefoot, also known as maze rabbitfish, scribbled spinefoot or vermiculate rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. Like all rabbitfishes, it has venomous spines on the dorsal, anal, and pelvic fins. It is a reef associated fish species of the Indo-West Pacific region. It is a common commercially important fish in many tropical countries.

<i>Siganus virgatus</i> Species of fish

Siganus virgatus, the barhead spinefoot, doublebar rabbitfish or doublebar spinefoot is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Indo-Pacific region.

<i>Siganus sutor</i> Species of fish

Siganus sutor, the shoemaker spinefoot rabbitfish ,whitespotted rabbitfish or African whitespotted rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It lives in Indo-Pacific coral reefs. It is endemic to the Indian Ocean, from Indonesia to Comoros. S. sutor is one of the commercial marine fishes, which is ubiquitously caught, in Tanzania and the entire East African coast of the Indian Ocean. S. sutor is among the most common fish species in the marine fisheries of Kenya, and accounts for around 40% of the artisanal fishery landings. Various fishing gears are used to target the siganids, but basket traps are the preferred ones. It is one of the mangrove/seagrass-associated coral reef fishes. This species inhabits littoral areas and its fin spines are venomous to humans.

<i>Siganus fuscescens</i> Species of fish

Siganus fuscescens, the mottled spinefoot, black rabbitfish, black spinefoot, dusky rabbitfish, fuscous rabbitfish, happy moments, mi mi, pearl-spotted spinefoot, pin-spotted spinefoot, stinging bream or West Australian rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Western Pacific Ocean.

<span class="mw-page-title-main">Peppered spinefoot</span> Species of fish

The peppered spinefoot, also known as the finespotted rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It occurs in the Indo-West Pacific region.

<i>Siganus punctatus</i> Species of fish

Siganus punctatus the goldspotted spinefoot, goldspotted rabbitfish, punctuated spinefoot, spotted rabbitfish, spotted spinefoot or yellow-spotted spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It occurs in the Indo-West Pacific region.

<i>Siganus randalli</i> Species of fish

Siganus randalli, the variegated spinefoot or Randall's rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Western Pacific Ocean.

<i>Siganus spinus</i> Species of fish

Siganus spinus, the little spinefoot, scribbled rabbitfish, blunt-nosed spinefoot, spiny rabbitfish, or spiny spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Indo-Pacific region.

<i>Siganus stellatus</i> Species of fish

Siganus stellatus, the brown-spotted spinefoot, brown-spotted rabbitfish, honeycomb rabbitfish, starspotted spinefoot, starspotted rabbitfish or stellate rabbitfish is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found in the Indo-Pacific region.

<i>Siganus trispilos</i> Species of fish

Siganus trispilos, the threeblotched rabbitfish, threespot rabbitfish, threeblotch spinefoot or threespot spinefoot is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is endemic to the eastern Indian Ocean off northwestern Western Australia.

References

  1. 1 2 3 4 5 Carpenter, K.E.; Lawrence, A. & Myers, R. (2017) [errata version of 2016 assessment]. "Siganus canaliculatus". IUCN Red List of Threatened Species . 2016: e.T46088346A115394869. doi: 10.2305/IUCN.UK.2016-3.RLTS.T46088346A46664909.en . Retrieved 23 July 2020.
  2. ↑ "WoRMS taxon details - Siganus canaliculatus (Park, 1797)". World Register of Marine Species . Retrieved 18 June 2020.
  3. 1 2 3 4 5 6 Froese, Rainer; Pauly, Daniel (eds.). "Siganus canaliculatus". FishBase . June 2021 version.
  4. 1 2 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Siganus". Catalog of Fishes . California Academy of Sciences . Retrieved 24 August 2021.
  5. ↑ Te-Hua Hsu; Y T Adiputra; Christopher Burridge; Jc Gwo (2011). "Two spinefoot colour morphs: Mottled spinefoot Siganus fuscescens and white-spotted spinefoot Siganus canaliculatus are synonyms". Journal of Fish Biology. 79 (5): 1350–1355. doi:10.1111/j.1095-8649.2011.03104.x.
  6. ↑ Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Siganus". FishBase . June 2021 version.
  7. 1 2 Christopher Scharpf & Kenneth J. Lazara, eds. (12 January 2021). "Order Acanthuriformes (part 2): Families Ephippidae, Leiognathidae, Scatophagidae, Antigoniidae, Siganidae, Caproidae, Luvaridae, Zanclidae and Acanthuridae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 24 August 2021.
  8. 1 2 3 4 D.J. Woodland (2001). "Siganidae". In Carpenter, K.E. and Niem, V.H. (eds.). FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 6. Bony fishes part 4 (Labridae to Latimeriidae), estuarine crocodiles, sea turtles, sea snakes and marine mammal (PDF). FAO Rome. p. 3633. ISBN   92-5-104587-9.
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