Slender whiting

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Slender whiting
Sillago attenuata TSCK.jpg
Individuals at the Kuwait Scientific Center
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Spariformes
Family: Sillaginidae
Genus: Sillago
Species:
S. attenuata
Binomial name
Sillago attenuata
McKay, 1985
S. arabica distribution map.png
Range of the Slender whiting

The slender whiting (Sillago attenuata) is a poorly known species of inshore marine fish of the smelt whiting family, Sillaginidae that has a distribution limited to the Persian Gulf only. The Slender whiting, like most sillaginids requires careful study to determine its identity, with ray and vertebrae counts as well as swim bladder morphology distinguishing features. This inshore species of fish is commonly taken by fishermen using beach seines and is sold fresh in local markets.

Contents

Taxonomy and naming

The Slender whiting is one of over 30 species in the genus Sillago , [2] which is one of five genera belonging to the smelt whiting family Sillaginidae, this family was previously considered to be part of the Percoidea, a suborder of the Perciformes. [3] The 5th edition of Fishes of the World classifies the Sillaginidae in the order Spariformes. [4]

The species was first identified and named Sillago attenuata by McKay in 1985 from the holotype specimen collected in 1948 from Ras Tanura, Zaal Island in the Persian Gulf, with a number of paratypes also examined. The name of the species is derived from the Latin 'attenuatus', meaning attenuated or slender, reflected in the species common name. [3]

Description

Illustration of an individual Sillago attenuata.jpg
Illustration of an individual

The Slender whiting has the same basic body profile as all the smelt whiting species, with an elongate, slightly compressed body covered in ctenoid scales, tapering toward the terminal mouth. Being one of three species known from the Persian Gulf, further anatomical features must be examined before the species can be confidently identified. [5]

The first dorsal fin consists of 12 or 13 spines, with the second dorsal fin having a single spine and 19 to 21 soft rays. The anal fin is similar to the second dorsal fin, but having 2 spines and between 18 and 20 soft rays. Other identifying features are the lateral line scale count, which numbers between 73 and 77 in the species, and the vertebrae count which is 37 to 39. [5]

The swim bladder is almost transparent and much more delicate than other members of Sillago. The specimen examined by McKay had an elongate oval shaped swim bladder with two rudimentary posterior extensions and no anterior extension. A delicate ductile process is present on the posterior ventral surface of the swim bladder. [3]

The overall colour of the Slender whiting is a light sandy brown, with two series of faint blotches running laterally. The upper row of these blotches has about 8 or 9 spots while the lower mid-lateral row has 10 spots. A row of indistinct spots or blotches runs along the base of the first, spinous dorsal fin, whose anterior most interspinous membranes are dusted with black spots. The membrane of the second dorsal fin dusted with black, while all other fins are hyaline in appearance. Juveniles have a well defined mid lateral horizontal row of 9 elongate spots just below the lateral line. [3]

Distribution and habitat

The Slender whiting, like the Shortnose whiting, has a range confined entirely to the Persian Gulf, where it inhabits shallow coastal waters. The species frequents beaches and most likely inhabits tidal flats along the coast. Nothing else is known about the biology or habitat of this species. [6]

Importance to humans

The slender whiting is a common catch for subsistence and minor commercial fishermen along the coast of the Persian Gulf, where it is sold fresh in local markets. Like many other Sillago species, it is taken alongside other smelt-whitings and no attempt is made to distinguish the species, as they are caught solely for consumption in an area with little to no fishing regulations or studies. [6]

Related Research Articles

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<span class="mw-page-title-main">Small-eyed whiting</span> Species of fish

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<span class="mw-page-title-main">Rough whiting</span> Species of fish

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<span class="mw-page-title-main">Small-scale whiting</span> Species of fish

The small-scale whiting, also known as the blue whiting, is a species of inshore marine fish of the smelt-whiting family Sillaginidae. The small-scale whiting is very similar in body shape and colour to other species in the genus Sillago, but is distinguished by having 12 or 13 spines in the first dorsal fin compared to 11 in all other species. The species is distributed through parts of the west Pacific Ocean including Japan, Taiwan, Korea and India, inhabiting the tidal flats of major estuaries. It is a benthic predator taking crustaceans, molluscs and annelids. Spawning in the species takes place from May to September, with peaks identified in June and July. The eggs and larvae have been extensively studied in order to distinguish them from the more abundant Sillago sihama. Minor fisheries exist for the small-scale whiting, although it is thought be endangered by habitat loss and pollutionIUCN.

<span class="mw-page-title-main">Soringa whiting</span> Species of fish

The soringa whiting, also known simply as soringa or soringa sillago, is a poorly known species of coastal marine fish of the smelt-whiting family, Sillaginidae. The Soringa whiting is known exclusively from the east coast of India, inhabiting shallow inshore environments, particularly sandy substrates. S. soringa was first described in 1982 by Dutt and Sujatha, with the taxonomic status of the species was questioned by Roland McKay in his review of the Sillaginidae, with similar features to S. asiatica suggesting it is a senior synonym of the latter.

<span class="mw-page-title-main">Estuarine whiting</span> Species of fish

The estuarine whiting, also known as Vincent's whiting, is a species of benthic inshore marine fish of the smelt-whiting family, Sillaginidae. The estuarine whiting is very similar in appearance to the northern whiting, Sillago sihama, and as such was mistaken for the latter until 1980, when R.J. McKay identified the species based primarily on swimbladder morphology. The estuarine whiting is distributed along both the east and west coasts of India, primarily inhabiting the muddy substrates of estuaries. The species is locally important to fisheries in India, and is recognized as having aquaculture potential.

<span class="mw-page-title-main">Stout whiting</span> Species of fish

The stout whiting, also known as the yellow-cheek whiting or school whiting, is a species of benthic marine fish in the smelt-whiting family Sillaginidae. Like other sillaginids, it is an elongate, slightly compressed fish, growing to a maximum known length of 30 cm. The stout whiting is endemic to Australia, with the species divided into western and eastern populations, with the western population ranging from Shark Bay to Fremantle and the eastern population from Bustard Head, Queensland to northern New South Wales. The species inhabits deep, sandy continental shelf regions to a depth of at least 70 m.

<span class="mw-page-title-main">Chinese sillago</span> Species of fish

The Chinese sillago is a species of inshore marine fish in the smelt whiting family Sillaginidae, described in 2011. The species is known only to inhabit the coastal waters of China, primarily in estuarine tidal flats near Wenzhou, Zhejiang Province. The Chinese sillago was described in 2011 based on morphological and DNA barcode analysis of several specimens. Several detailed anatomic features distinguish it from other sillaginids, with Sillago parvisquamis its closest relative based on phylogenetic analysis. Nothing is known of the ecology or importance to fisheries of the Chinese sillago.

References

  1. Abdulqader, E.; Motomura, H. & Matsuura, K. (2015). "Sillago attenuata (errata version published in 2017)". IUCN Red List of Threatened Species . 2015: e.T56852351A115522596. doi: 10.2305/IUCN.UK.2015-4.RLTS.T56852351A115522596.en . Retrieved 22 October 2023.
  2. Froese, Rainer and Pauly, Daniel, eds. (2023). Species of Sillago in FishBase . June 2023 version.
  3. 1 2 3 4 McKay, R.J. (1985). "A Revision of the Fishes of the Family Sillaginidae". Memoirs of the Queensland Museum. 22 (1): 1–73.
  4. Nelson, J.S.; Grande, T.C.; Wilson, M.V.H. (2016). Fishes of the World (5th ed.). Hoboken, NJ: John Wiley & Sons. pp. 502–506. doi:10.1002/9781119174844. ISBN   978-1-118-34233-6. LCCN   2015037522. OCLC   951899884. OL   25909650M.
  5. 1 2 McKay, R.J. (1992). FAO Species Catalogue: Vol. 14. Sillaginid Fishes Of The World (PDF). Rome: Food and Agricultural Organisation. pp. 19–20. ISBN   92-5-103123-1.
  6. 1 2 McKay, Roland J.; L.J. McCarthy (1989). "A revision of the sillaginid fish of the Persian Gulf with a description of Sillago arabica new species". Memoirs of the Queensland Museum. 27 (2): 551–554.