分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Acropomatiformes (Oceanic basses)
鱸形目 (Oceanic basses) >
Symphysanodontidae (Slopefishes)
癒齒鯛科 (Slopefishes)
Etymology: Symphysanodon: Greek, syn, symphysis = grown together + Greek, physis = growth body form + Greek, odous = teeth; related to few teeth which are located over the area where the two jaws meet (Ref. 45335); rhax: Name rhax (berry or grape) is from the Greek and is an allusion to the similarity of this new species to S. berryi. The new name is a feminine noun in apposition to Symphysanodon.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋; 深度上下限 ? - 218 m (Ref. 54833). 熱帶
Western Indian Ocean: known only off the Maldive Islands.
西印度洋: 知道只有外海的馬爾地夫島。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 14.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 54833)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 9; 背的軟條 (總數) : 10; 臀棘: 3; 臀鰭軟條: 7; 脊椎骨: 25. This species is separable from all other species of the genus, except S. berryi, by the following combination of characters: segmented rays in anal fin 7, tubed lateral-line scales 50, total gillrakers on first gill arch 35-38 (10 or 11 + 25-27), sum of lateral-line scales and gillrakers on individual specimens 85-88, depth of body 20.6-24.8% SL (4.0-4.9 times in SL), length of depressed anal fin 21.8-23.9 % SL, length of anal-fin base 12.6-14.8% SL, length of first anal-fin spine 3.0-4.8% SL, hypurals 1 & 2 autogenous, hypurals 3 & 4 represented by a single plate, and first caudal vertebra without parapophyses. It can be separated from the Atlantic species S. berryi by a number of morphometric characters. It also differs slightly from S. berryi in counts of pectoral-fin rays (17 or18, mean = 17.33, for S. rhax
vs. 16-18, mean = 16.99, for S. berryi).
除了 S. berryi 以外, 這種從所有的其他種的本屬是可分離的, 藉由跟隨組合特徵: 在臀鰭 7 ，管狀的側線鱗片 50 中的分段鰭條, 在第一鰓弓 35-38(10 或 11+25-27) 上的總鰓耙, 在個別的標本 85-88 ，身體 20.6-24.8% SL 的深度. ，扁平臀鰭 21.8-23.9% SL 的長度上的側線鱗片與鰓耙的總數, 臀鰭基底 12.6-14.8 的長度% SL, 第一個臀鰭的長度棘 3.0-4.8% SL, 尾下骨 1&2 自生的, 尾下骨 3&4 呈現出一個碟, 與第一個沒有椎體橫突的尾部的脊椎骨。 它能被一些型態特徵的特徵與大西洋種 S. berryi 分開。 它也在胸鰭鰭條的計數中些微地不同於 S. berryi(17 或 18, 平均的 =17.33, 對於 S. rhax
vs.16-18, 意謂 =16.99, 對於 S. berryi).
Depth of capture, 218 m, is available for only one collection.
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
西印度洋: 知道只有外海的馬爾地夫島。
Anderson, W.D. and V.G. Springer, 2005. Review of the perciform fish genus Symphysanodon Bleeker (Symphysanodontidae), with descriptions of three new species, S. mona, S. parini, and S. rhax. Zootaxa 996(1):1-44. (Ref. 54833)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5004 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
