The blackspotted gurnard (Pterygotrigla hemisticta), also known as the half-spotted gurnard, is a species of marine ray-finned fish belonging to the family Triglidae, the gurnards and sea robins. It is found in the Indo-Pacific region.
| Blackspotted gurnard | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Scorpaeniformes |
| Family: | Triglidae |
| Genus: | Pterygotrigla |
| Subgenus: | Otohime |
| Species: | P. hemisticta
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| Binomial name | |
| Pterygotrigla hemisticta | |
| Synonyms[2] | |
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Taxonomy
editThe blackspotted gurnard was first formally described in 1843 as Trigla hemisticta by Coenraad Jacob Temminck and Hermann Schlegel with the type locality given as Nagasaki in Japan.[3] In 1907 David Starr Jordan and Edwin Chapin Starks proposed the monotypic genus Otohime for Trigla hemisticta and this is currently treated as a subgenus of the genus Pterygotrigla with the blackspotted gurnard as its type species.[4] The specific name means “half spotted” and is assumed to refer to the spotted upper body and dorsal fin.[5]
Description
editThe blackspotted gurnard has an elongated body. The head has no scales but is covered with spines and ridges. There are spines at the tip of the snout. There is a large, robust spine on the operculum. The terminal mouth has villiform teeth on the jaws, premaxillae, dentaries and the head of the vomer. The cycloid scales are tint but the nape has no scales. The scales on the lateral line are crenulated. The first dorsal fin has 9 or 10 bony plates, created by flattened pterygiophores, along its base. This fin has 7 spines while the second dorsal fin has 11 soft rays, as does the anal fin. The pectoral fins have 15 rays with the inner 3 separated from the main part of the fin.[6] The pectoral fin has a black patch and crossed by an oblique line of white spots. The main colour is red with obvious black spotting and large black spot on the spiny dorsal fin. This species attains a maximum total length of 30 cm (12 in).[2]
Distribution and habitat
editThe blackspotted gurnard is found in the Indian and Western Pacific Oceans. It ranges from Japan in the north, south through the China Seas to the Philippines and northern Australia.It has also been recorded from Bangladesh, India, Yemen and Oman.[1][7] The blackspotted gurnard is a demersal fish, typically encountered sitting on the sea bed at depths between 10 and 440 m (33 and 1,444 ft)[1] on the continental shelf and on the continental margin.[2]
References
edit- ^ a b c Kawai, T. (2017) [errata version of 2010 assessment]. "Pterygotrigla hemisticta". IUCN Red List of Threatened Species. 2010: e.T155078A115269092. doi:10.2305/IUCN.UK.2010-4.RLTS.T155078A4692282.en. Retrieved 3 June 2022.
- ^ a b c Froese, Rainer; Pauly, Daniel (eds.). "Pterygotrigla hemisticta". FishBase. February 2022 version.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Pterygotrigla". Catalog of Fishes. California Academy of Sciences. Retrieved 5 June 2022.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Pterygotriglinae". Catalog of Fishes. California Academy of Sciences. Retrieved 5 June 2022.
- ^ Christopher Scharpf & Kenneth J. Lazara, eds. (10 June 2021). "Order Perciformes (Part 12): Suborder Triglioidei: Families Triglidae and Peristediidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 6 June 2022.
- ^ Dipanjan Ray & Anil Mohapatra (2013). "First report of two fish species of genus Pterygotrigla (Family:Triglidae) from east coast of India" (PDF). Indian Journal of Geo-Marine Sciences. 45 (6): 72–755.
- ^ Saha, Tonmoy; Ahmed, Md Sagir; Datta, Sujan Kumar; Zhilik, Ayesha; and Chowdhury, Zahan (2018). "A new record of Black-spotted gurnard Pterygotrigla hemisticta (Temminck and Schlegel, 1843) (Scorpaeniformes: Triglidae) from the Bay of Bengal, Bangladesh". Journal of Life and Earth Science. 13: 53–55.