Teleostei (teleosts) >
Pleuronectiformes (Flatfishes) >
Cynoglossidae (Tonguefishes) > Symphurinae
Etymology: Symphurus: Greek, syn, symphysis = grown together + Greek, oura = tail (Ref. 45335).
More on author: Weber.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 1 - 82 m (Ref. 26267). Tropical
Western Pacific Ocean: Indonesia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 7.1 cm TL male/unsexed; (Ref. 26267)
Dorsal soft rays (total): 87; Anal soft rays: 73; Vertebrae: 48. This species is distinguished from all congeners by the combination of: ID pattern1-2-2-2-2; caudal-fin rays 12; vertebrae; 9 (3 + 6) abdominal, 48 total; hypurals 4; D 87, A 73; longitudinal scale rows 64; transverse scale rows 25; scale rows on the head posterior to the lower orbit 15; body elongate (BD = 24.9% of SL); preanal length long (PAL = 28.1% of SL); upper head lobe much smaller than lower lobe; head long (HL = 24.2% of SL), longer than head width (HW/HL = 0.97); postorbital length long (POL = 76.5% of HL); snout short (SNL = 10.4% of HL, SNL/ED = 1.25), slightly rounded anteriorly; dorsal-fin origin located at the vertical posterior to upper eye; predorsal length short (PDL = 18.1% of HL); eye is relatively small (ED = 8.4% of HL); eyes are unequal in position with anterior margin of upper eye greatly in advance of anterior margin of lower eye; fleshy ridge well developed on posterior part of ocular-side lower jaw; membrane covering upper and lower eyes; with continuous, fleshy membrane connecting anterior nostril with lower part of eye. Colouration: ocular-side pigmentation uniformly yellowish-brown; blind-side pigmentation uniformly yellow; both sides with obvious dermal spots on bases of anteriormost dorsal and anal fins (Ref. 126065).
Cross section: flattened.
Presumably frequents coastal lagoons with sandy bottom. More studies are needed concerning the ecology of this species.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Munroe, T.A. and B.N. Marsh, 1997. Taxonomic status of three nominal species of Indo-Pacific symphurine tonguefishes (Symphurus: Cynoglossidae: Pleuronectiformes). Ichthyol. Res. 44(2):189-200. (Ref. 26267)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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Estimates based on models
Preferred temperature (Ref.
123201): 26.1 - 29, mean 28.2 °C (based on 1024 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [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).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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