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Dysomma opisthoproctus Chen and Mok, 1995
Life   Vertebrata   Fish   Synaphobranchidae   Dysomma

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Kingdom Animalia  
 Phylum Chordata  
 Class Actinopterygii  
 Order Anguilliformes  
 Family Synaphobranchidae  
 Genus Dysomma  
  Dysomma opisthoproctus    Chen & Mok, 1995 
Provider: Kwang-Tsao Shao 
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Citation: 陳餘鋆, 2002. 臺灣深海鰻類的分類,分布,柔軟器官及以腦部形態與尾鰭骨骼探討真鰻類及糯鰻亞目之親緣關係 楊瑋庭 , 2011. 碩士論文:臺灣合鰓鰻科魚類之初步分類研究. Karrer, C. , 1982. Anguilliformes du canal de mozambique (Pisces, Teleostei). Fauna tropicale. 23: 1-116
Character: No scale. Pectoral fin present. Upper jaw longer than lower jaw. Premaxillary teeth 2. Upper jaw small, in a band; lower jaw teeth large, in a row. Vomerine teeth 5. Premaxillary teeth and vomerine teeth compound. Dorsal fin origin behind pectoral fin.Vertebrae 120. Total length 15.6 of body depth, 7.4 of head length; caudal length 6.7 of the length from head to trunk; head length 5.1 of snout length; snout length 3.3 of diameter of eye Rictus posterior to rear of the eye. Eye small. caudal fin present. The length of anus to gill slit shorter than head length. Body color brown. Dorsal anal fin white.  
Habitat: Demersal fishes, caught from the benthic trawling (about 150 meter deep), Feed on crustceans and other invertebrates.  
Distribution: Northeastern of Taiwan Waters. 
Utility: No enough quantity for fishery.  
Name Code: 380815
   Endemic      Marine     
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Dysomma&speciesname=opisthoproctus ---> https://www.fishbase.in/Summary/speciesSummary.php?genusname=Dysomma&speciesname=opisthoproctus
https://www.fishbase.in/Summary/speciesSummary.php?genusname=Dysomma&speciesname=opisthoproctus ---> https://www.fishbase.in/summary/Dysomma-opisthoproctus.html

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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Dysomma opisthoproctus Chen & Mok , 1995

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Dysomma opisthoproctus   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Anguilliformes (Eels and morays) > Synaphobranchidae (Cutthroat eels) > Ilyophinae
Etymology: Dysomma: Greek, dys, dyo = two + Greek, omma = eye ;   opisthoproctus: Species name refers to its posterior positioned anus (Ref. 31561 ) .

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range ? - 200 m (Ref. 31561 ).   Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Northwest Pacific: known only from Nan-Fong-Ao, northeastern Taiwan.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 42.1 cm TL male/unsexed; (Ref. 31561 )

Short description Morphology | Morphometrics

Vertebrae : 120. This species is distinguished by the following characters: with pectoral fin; dorsal-fin origin is in front of level of pectoral-fin base, predorsal length 10.6% TL; anus is posterior and far behind tip of pectoral fin, preanal length 35.1% TL; trunk is very long, trunk length 20.2% TL; intermaxillary teeth 2; compound teeth on vomer 4; multiple rows of small teeth on the upper jaw; a row of 7 or 8 large compound teeth on lower jaw; head pores: IO 4, SO 3, M 7, POP 0, AD 1; lateral-line pores: prepectoral 6, preanal 24, lateral line runs to more than 2 head length before caudal fin; 25 preanal vertebrae, 120 total vertebrae; colour of body brownish dorsally and paler ventrally with lower part of posterior margin of anal fin and caudal fin black (Ref. 31561 ).

Biology     Glossary (e.g. epibenthic)

Maximum depth reported based on a single specimen (Ref. 31561 ). Minimum depth from Ref. 58018.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Chen, Y.Y. and H.K. Mok , 1995. Dysomma opisthoproctus , a new synaphobranchid eel (Pisces: synaphobranchidae) from the northeastern coast of Taiwan. Copeia 1995(4):927-931. (Ref. 31561 )

IUCN Red List Status (Ref. 120744 )

    Not Evaluated  

CITES (Ref. 118484 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans


Updated: 2020-07-12 07:13:28 gmt
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