Setarches

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Setarches
Setarches guentheri, type species of the genus

Setarches guentheri , type species of the genus

Systematics
Spinefish (Acanthopterygii)
Perch relatives (Percomorphaceae)
Order : Perch-like (Perciformes)
Subordination : Scorpionfish relatives (Scorpaenoidei)
Family : Setarchidae
Genre : Setarches
Scientific name
Setarches
Johnson , 1862

Setarches is a genus of bony fish inthe Setarchidae family .

features

The body is moderately flattened on the sides. With the exception of the cheeks and behind the eyes, the head is blank. There are five spines on the front cover , the pre-orbital bone (bone in front of the eye socket) is covered with three spines. When fresh, the body and head are red. The swim bladder is well developed. The entire digestive tract , including the oral cavity, stomach, pyloric tubes and intestines, is black in living animals and black-gray in prepared specimens.

The split dorsal fin (dorsal) is supported by 12 (11 to 13) spiked rays and 9 or 10 (9 to 11) soft rays, the anal fin (anal) by 3 spiny rays and 5 (4 to 6) soft rays ( juvenile animals only 2 spiny rays) . The pectoral fins (pectorals) have 20 to 25 fin rays.

Johnson noted that a specimen of Sebastes guentheri collected in December 1861 differed from the other specimens of the genus and recreated the genus Setarches in its first description on the description of Setarches guentheri . Among other things, he noted that the body is covered by cycloid scales. There are thin, elongated (villiform) teeth on the jaw, ploughshare (vomer) and palatine bone (palatinum). The sideline is a wide, scaly gully. In addition to six or seven Branchiostegal rays, he noted pyloric tubes in small numbers. He could not find a swim bladder in the type specimen and therefore did not attribute any swim bladder to the genus.

distribution

Setarches longimanus occurs in the western Pacific and the Indian Ocean , Setarches guentheri in the Atlantic and in the Indian and western Pacific Ocean .

habitat

Setarches species live pelagic or semi-pelagic off the coast at depths of 200 to 800 meters.

species

There are three species in the genus, but Setarches armata may be synonymous with another species in the genus. Setarches guentheri and Setarches longimanus are morphologically and in the coloration of adult animals very similar:

Individual evidence

  1. ^ A b c d W. N. Eschmeyer, BB Collette: The scorpionfish subfamily Setarchinae, including the genus Ectreposebastes. In: Bulletin of Marine Science , 1966, 16 (2), pp. 349-375. ( Online )
  2. ↑ Ui Cheol Shin, Jin-Koo Kim, Dong-Soo Joo: New Korean Record of Setarches longimanus (PISCES: Scorpaenidae). In: Fisheries and Aquatic Sciences No. 19, 2016 ( Online )
  3. ↑ JY Johnson: Descriptions of some new genera and species of fishes obtained at Madeira. In: Proceedings of the Zoological Society of London. Volume: 1862, pp. 167–180, 1862. ( Online )
  4. ↑ SG Poss: SCORPAENIDAE Scorpionfishes (also, lionfishes, rockfishes, stingfishes, stonefishes, and waspfishes). , In: FAO Species Identification Guide for Fishery Purposes , Volume 4, Bony fishes part 2 (Mugilidae to Carangidae), p. 2291. Online
  5. ↑ Setarches armata on Fishbase.org (English)

Web links

Commons : Setarches  - collection of images, videos and audio files