Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Pleuronectiformes
(Flatfishes) > Cynoglossidae
(Tonguefishes) > Symphurinae
Etymology: Symphurus: Greek, syn, symphysis = grown together + Greek, oura = tail (Ref. 45335); thermophilus: From the Greek thermos meaning heat and philos meaning lover. In reference to the preferred habitat of this species at active hydrothermal vent areas.
Environment / Climate / Range
Marine; demersal; depth range 239 - 733 m (Ref. 78522). Tropical; 19°C - 22°C (Ref. 78522); 27°N - 36°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.7 cm SL male/unsexed; (Ref. 78522); 10.2 cm SL (female)
Pacific: an endemic species in the western Pacific Ocean collected at several active hydrothermal vent sites with a disjunct distribution over a wide geographic range from Kaikata Seamount (26°42.30'N, 141°04.70'E; near Bonin Island, off southeastern Japan) to the Rumble 3 Submarine Volcano (35°44'S, 178°72-79'W) on the Kermadec Ridge, northern New Zealand (Ref. 78522).
Occurs on a variety of substrata only within active hydrothermal vent sites (Ref. 78522).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Munroe, T.A. and J. Hashimoto, 2008. A new Western Pacific Tonguefish (Pleuronectiformes: Cynoglossidae): The first Pleuronectiform discovered at active Hydrothermal Vents. Zootaxa 1839:43-59. (Ref. 78522)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 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), based on all LWR estimates in FishBase (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (24 of 100) .