>
Anguilliformes (Eels and morays) >
Synaphobranchidae (Cutthroat eels) > Ilyophinae
Etymology: Ilyophis: Greek, ilyos, -ou = cave + Greek, ophis = serpent (Ref. 45335).
Eponymy: Arx is Latin for castle, alluding to Dr Peter Henry John Castle (1934–1999), who “laid the foundations of modern work on synaphobranchid eels”. (See Castle) (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক ব্যথিডিমারসাল সমুদ্র তলদেশবিহারী; গভীরতার পরিসীমা 2375 - 4157 m (Ref. 132084). Deep-water; 30°N - 15°S (Ref. 132084)
East Central Pacific: from the Nazca Ridge off central Peru to seamounts northwest off Hawaii.
Length at first maturity / আকৃতি / ওজন / Age
Maturity: Lm ?, range 24 - ? cm
Max length : 61.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 132084)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 309 - 322; পায়ূর নরম পাখনা্তুন্ড: 235 - 261; কশেরুকা : 131 - 135. This species is distinguished by the following characters. body no dcales; trunk relatively long
(about 21-29% of TL); dorsal-fin origin (DFO) above the posterior third of pectoral fin; gape of mouth moderate, extending to near rear margin of eye; teeth not compound; intermaxillary teeth conical with approximately 16-24 teeth in the tooth patch, inner teeth on the patch nearly twice as large as the outer teeth; vomerine teeth contiguous with intermaxillary teeth with approximately 25-30 teeth, irregularly biserial to triserial anteriorly and uniserial posteriorly; both the intermaxillary and vomerine teeth set in beds of papillose tissue; maxillary teeth small, set in irregular rows, 3 rows anteriorly to 6 rows posteriorly; dentary teeth similar to maxillary teeth except they are slightly larger and more uniform in size anteriorly; lateral line short, confined to the anterior half of body (ca. 35-45% of TL); cephalic lateralis pores with supraorbital (SO) 3, infraorbital (IO) 5 (including adnasal, AD), preoperculomandibular (POM) 6-10; total vertebrae 129-136 (Ref. 132084).
This species may be a specialist of seamounts, ridges and island slopes, suggesting that it may only be found associated with rough topographies (Ref. 132084).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Tighe, K.A., D.G. Smith, N.R. Merrett, B.W. Frable and U. Zajonz, 2024. Redescription of the eel Ilyophis arx Robins, 1976 (Anguilliformes:
Synaphobranchidae: Ilyophinae) with a description of a new species of Ilyophis,
and a taxonomic synopsis of the Ilyophinae. Zootaxa 5506(1):35-57. (Ref. 132084)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
মৎস্য: আকর্ষণবিহীণ
হাতিয়ার
Special reports
Download XML
ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature (Ref.
123201): 2 - 3.3, mean 2.7 °C (based on 14 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 4.0 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): মাধ্যম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১.৪-৪.৪ বৎসর (Fec = 1,979).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
