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मिक्सिनी (हैगफिश) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Eptatretinae
Etymology: Eptatretus: hepta (Gr.), seven; tretos (Gr.), perforated (i.e., with holes), referring to seven gill apertures on what would later be described as Homea banksii (=E. cirrhatus) [range within genus is 6-14 pairs of gill apertures] (See ETYFish); multidens: multus (L.), many; dens (L.), tooth, referring to high tooth count (three fused teeth in each row) (See ETYFish).
More on authors: Fernholm & Hubbs.

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

समुद्री बाथीड़िमरसल; गैर प्रवासी; गहराई सीमा 239 - 770 m (Ref. 31276). Deep-water

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Western Atlantic: Caribbean Sea and off French Guiana (Ref. 36999), including northeastern Brazil (Ref. 52140).

आकार / वज़न / Age

Maturity: L_m ? range ? - ? cm
Max length : 81.5 cm TL पुल्लिंग / अलिंग; (Ref. 52140)

Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

Diagnosis: Gill pouches 6 pairs. Fused cusps 3 in both anterior and posterior rows of teeth; total cusps 50-58. No middorsal light stripe (Ref. 52140). Slime pores: prebranchial 14-16; branchial 5-7; trunk 52-55; tail 15; total 87-93 (Ref. 41105).

Minimum depth given from Ref. 52140.

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Copulatory organ absent. The gonads of hagfishes are situated in the peritoneal cavity. The ovary is found in the anterior portion of the gonad, and the testis is found in the posterior part. The animal becomes female if the cranial part of the gonad develops or male if the caudal part undergoes differentiation. If none develops, then the animal becomes sterile. If both anterior and posterior parts develop, then the animal becomes a functional hermaphrodite. However, hermaphroditism being characterised as functional needs to be validated by more reproduction studies (Ref. 51361 ).

Main reference Upload your references | संदर्भ | संयोजक | सहयोगीयो

Fernholm, B., 1998. Hagfish systematics. p. 33-44. In J.M. Jørgensen, J.P. Lomholt, R.E. Weber and H. Malte (eds.) The biology of hagfishes. Chapman & Hall, London. 578 p. (Ref. 31276)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 11 November 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

मात्स्यिकी: कोई रुचि बग़ैर

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इंटरनेट स्रोत

Estimates based on models

Preferred temperature (Ref. 123201): 8.6 - 15.5, mean 11.5 °C (based on 79 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00204 (0.00094 - 0.00444), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.3 ±0.7 se; based on size and trophs of closest relatives

लौटाव (Ref. 120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (53 of 100).

Eptatretus multidens Fernholm & Hubbs, 1981