Sorsogona tuberculata (Cuvier 1829)

The tuberculated flathead (Ratabulus tuberculatus) is a species of marine ray-finned fish belonging to the family Platycephalidae, the flatheads. This species is found in Indian and Western Pacific Oceans.

Taxonomy

The tuberculated flathead was first formally described in 1829 as Platycephalus tuberculatus by the French zoologist Georges Cuvier with the type locality given as Trincomalee in Sri Lanka.^[3] In 1934 the Norwegian born American zoologist Albert William Herre described a new species, Sorsogona serrula, and classified it within a new monotypic genus, Sorsogona. Herre’s name is a junior synonym of Cuvier’s P. tuberculatus and this species has been regarded as the type species of Sorsogona. However, some authorities do not recognise Sorsogona as a valid genus and classify its species within the genus Ratabulus.^[4] Other authorities continue to recognise Sorsogona as a valid genus.^[2] The specific name tuberculatus refers to the bony tubercles on the gill cover and crown.^[5]

Description

The tuberculated flathead has a slightly flattened, elongated body with a large, moderately flattened head. The ridges above the eye hace small spines or serrations, some with twin points. The eyes are large with between 2 and 6 spines to their front which decrease in size from top to bottom and the upper-most has a smaller spine at its base. The diagonal scale rows slanting backward above the lateral line are roughly equal in number as the lateral-line scales. The lateral line scales number 47 to 54, typically 51 or 52, with the 12 to 28 nearest the head bearing a small spine or ridge, and the scales above these are frequently having a hook or tubercle. The first dorsal fin contains 8 or 9 spines and is short based, the first spine is very short and separate from the rest, the remaining spines are a lot longer while the second dorsal fin between 10 and 12, usually 11, soft rays. The second dorsal fin and the anal fin have a similar shape and are opposite each other but the anal fin has a slightly longer base than the second dorsal fin and also contains between 10 and 12 soft rays. The caudal fin is slightly rounded. The overall colour of the upper body is tan or pale olive-brown marked with 3 or 4 vague, transverse darker bands over the back, and pale ventrally. The pectoral and pelvic fins have several separate black bars, and have white margins to the fins.^[6] The maximum published total length of this species is 14 cm (5.5 in), although 12 cm (4.7 in) is more typical.^[2]

Distribution and habitat

The tuberculated flathead is found in the Indo-West Pacific region where it is found from the Persian Gulf to Indonesia, the Philippines and northern Australia.^[1] In Australia it is found from Dampier, Western Australia to Moreton Bay, Queensland,^[6] It is found at depths between 9 and 80 m (30 and 262 ft) on sandy and muddy banks of the continental shelf.^[1]

Biology

The tuberculated flathead feeds on shrimps, crustacean larva, molluscs, fish scales and crabs.^[1]

Fisheries

The tuberculated flathead is of no commercial value but is taken as bycatch but this is normally discarded at sea.^[1]

References

Sorsogona tuberculata Sorsogona generoko animalia da. Arrainen barruko Platycephalidae familian sailkatzen da.

Banaketa

Erreferentziak

• FishBase.org

Ikus, gainera

• Sorsogona
• Platycephalidae

Sorsogona tuberculata is een straalvinnige vissensoort uit de familie van platkopvissen (Platycephalidae).^[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1829 door Cuvier.

突粒眶棘牛尾魚（学名：Sorsogona tuberculata），又名瘤眶棘鯒、竹甲、狗祈仔、牛尾，为牛尾魚科眶棘鯒屬下的一个种。

分布

本魚分布於紅海、印度洋、菲律賓及台灣。

深度

水深5至100公尺。

特徵

頭部中庸平穩，有強隆起之稜線及銳棘。前鰓蓋下緣無前向棘。頭側有一隆起稜線；眼下隆起稜線密生鋸齒，眼上隆起稜線僅後半有鋸齒。眼眶具一小皮瓣。側線前部約16至20個鱗片，上各具一棘。體呈黃褐色，體側和尾部各有不規則之橫帶，各鰭黃色，有褐色斑點。

生態

棲息於沙泥質海底，常潛於沙中，露出兩眼，伺機捕食魚蝦蟹類。

經濟利用

食用魚，可用油煎食。

参考文献

• 突粒眶棘牛尾鱼 Sorsogona tuberculata Cuvier, 1829. 台湾物种名录. 台湾: 中央研究院生物多样性研究中心. [2013-1-24] （繁体中文）. 请检查|access-date=中的日期值 (帮助)