分类 / Names
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Teleostei >
Pleuronectiformes (Flatfishes) >
Cynoglossidae (Tonguefishes) > Symphurinae
Etymology: Symphurus: Greek, syn, symphysis = grown together + Greek, oura = tail (Ref. 45335); brachycephalus: Name from Greek, 'brachy' meaning short and 'cephalus' for head, referring to the relatively shorter head of this species when compared with those of similar shallow-water tonguefishes.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 居于水底的; 深度上下限 ? - 100 m (Ref. 126065).
Western Pacific: Vietnam.
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.3 cm SL 雄鱼/尚未辨别雌雄; (Ref. 126065); 6.0 cm SL (female)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 81 - 87; 臀鳍软条: 69 - 74; 脊椎骨: 45 - 48. This species is distinguished from its congeners by the following set of characters: ID pattern1-2-2-2-2; caudal-fin rays 12; vertebrae, abdominal 9 (3 + 6), total 45-48; hypurals 4; D 81-87, A 69-74, longitudinal scale rows 72-82, transverse scale rows 26-30, scale rows on head posterior to lower orbit 15-18; with a moderately wide body (BD= 24.9–27.5% of SL); preanal length short (PAL = 21.4-25.9% of SL); head relatively short (HL= 17.3-20.8% of SL) and with its length usually shorter than its width (HW/HL= 1.04-1.19); postorbital length relatively long (POL = 69.6-74.9% of HL); upper head lobe is usually wider than lower head lobe; dorsal-fin origin at, or slightly posterior to, vertical through posterior margin of upper eye; predorsal length long (PDL = 22.4-28.9% of HL); snout relatively short (SNL = 13.4-19.4% of HL, SNL/ED = 1.21-1.71), rounded to obliquely blunt anteriorly; eyes moderate (ED = 9.5-12.7% of HL); equal in position (anterior margin of upper eye equal to anterior margin of lower eye, or slightly subequal with anterior margin of upper slightly in advance of anterior margin of lower eye); a membrane covering both eyes; fleshy ridge well-developed on the posterior part of ocular-side lower jaw; with continuous fleshy membrane connecting anterior nostril to ventral part of lower eye. Colouration: ocular-side pigmentation uniformly yellow to light brown, blind-side uniformly white; both sides of body with distinct dermal spots on bases of anteriormost dorsal- and anal-fin rays; peritoneum reddish, with bluishblack pigmentation on dorsalmost surface (Ref. 126065).
Based on recovered landings where this species is included in an assemblage of fish species which generally live at, or about at, depths shallower than 100 m, this fish is a shallow-water species of tonguefish inhabiting depths of approximately 100 m or so (Ref. 126065).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Lee, M.-Y. and T.A. Munroe, 2021. Unraveling cryptic diversity among shallow-water tonguefishes (Pleuronectiformes: Cynoglossidae: Symphurus) from the Indo-West Pacific region, with descriptions of five new species. Zootaxa 5039(1):1-5.5 (Ref. 126065)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00190 - 0.00797), b=3.17 (3.00 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
