Klassifizierung / Names
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Pleuronectiformes (Flatfishes) >
Cynoglossidae (Tonguefishes) > Symphurinae
Etymology: Symphurus: Greek, syn, symphysis = grown together + Greek, oura = tail (Ref. 45335); monostigmus: Name from the Greek word 'manos' (= one) and 'stigma' (= spot), referring to the single, conspicuous, black spot on the anteroventral region of the ocular side of the abdomen.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser demersal; tiefenbereich 65 - 110 m (Ref. 57441). Temperate
Western Indian Ocean: South Africa.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 5.5 cm SL Männchen/unbestimmt; (Ref. 57441)
Rückenflossenweichstrahlen (insgesamt) : 86; Afterflossenweichstrahlen: 73 - 74; Wirbelzahl: 48. This species is distinguished by having an irregular, conspicuous, dark spot overlying the anteroventral ocular-side body cavity; a 1-2-2-2-2 ID pattern; caudal-fin rays 14; D 86; A 73-74; vertebrae, abdominal 9 (3 + 6), total 48; hypurals 5; longitudinal scale rows 92; transverse scale rows 36-38; scale rows on the head posterior to lower orbit 18-19; body deep (BD = 28.8-32.4% of HL); preanal length short (PAL = 21.3-25.5% of SL); upper head lobe much wider than lower lobe; head moderately short (HL = 18.0-20.2% of SL), with head length much shorter than head width (HW/HL = 1.38-1.42); postorbital length long (POL = 75.8-79.4% of HL); snout short (SNL = 13.6-14.8% of HL; SNL/ED = 1.08-1.25), rounded to obliquely blunt anteriorly; dorsal-fin origin at vertical at anterior margin of upper eye; predorsal length short (PDL= 16.4-19.3% of HL); eyes equal in position (anterior margin of upper eye equal with anterior margin of lower eye), or slightly subequal (with anterior margin of upper eye anterior to that of lower eye); no fleshy ridge on ocular-side lower jaw. Colouration: ocular-side pigmentation yellowish-white with numerous freckles along bases of dorsal- and anal-fin rays; blind-side pigmentation uniformly white; peritoneum bluish-black (Ref. 126065) .
Body shape (shape guide): short and / or deep; Cross section: flattened.
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
Munroe, T.A., 2006. New western Indian Ocean tonguefish (Pleuronectiformes: Cynoglossidae, Symphurus). Copeia 2006(2):230-234. (Ref. 57441)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
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Internet Quellen
Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00437 - 0.01903), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Anfälligkeit der Fischerei (Ref.
59153): Low vulnerability (10 of 100).
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