Eptatretus cryptus Zintzen, Roberts, Shepherd, Stewart, Struthers, Anderson, McVeagh, Noren & Fernholm, 2015

Cryptic hagfish
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Eptatretus cryptus   AquaMaps   Data sources: GBIF OBIS
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Image of Eptatretus cryptus (Cryptic hagfish)
Eptatretus cryptus
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drawing shows typical fish in this Family.

Классификация / Names народные названия | синонимы | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Myxini (миксины) (hagfishes) > Myxiniformes (Hagfishes) > Myxinidae (Hagfishes) > Eptatretinae
Etymology: Eptatretus: Greek, epta = seven + Greek, tretos, -e, -on = with holes (Ref. 45335);  cryptus: Named from the Greek kryptos (hidden, secret), referring to the morphology of this species, which is very similar to that of E. cirrhatus, with which it has been confused in the past.

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

; морской батидемерсальный; пределы глубины 96 - 922 m (Ref. 115309).   Deep-water

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Western Pacific: New Zealand: known in coastal and offshore waters from the Three Kings Islands to Stewart Island and the eastern part of the Chatham Rise in depths of 96–922 m, but more commonly found deeper than 500 m (Ref. 115309).

Size / Вес / Возраст

Maturity: Lm ?  range ? - ? cm
Max length : 93.1 cm TL самец/пол неопределен; (Ref. 115309)

Краткое описание морфология | морфометрия

колючие лучи спинного плавника (общее число): 0; членистые (мягкие) лучи спинного плавника (общее число): 0; колючие лучи анального плавника 0; членистые (мягкие) лучи анального плавника: 0. Diagnosis: characterized by the combination of the following characters: 7 pairs of gill pouches, 3/3 multicusps, 12–15 prebranchial slime pores (modally 14), 78–86 total slime pores, slime pores without narrow white rim, preocular length 4.8–5.8% TL, and body colour brown to dark brown; differs from all other congeners except E. caribbeaus, E. menezesi, E. strahani, E. cirrhatus, and E. goliath by having 7 pairs of gill pouches and 3/3 multicusps; Eptatretus caribbeaus, E. menezesi, and E. strahani are not found in New Zealand; differs from E. caribbeaus by the number of anterior unicusps (10–11 versus 11–13), posterior unicusps (8–10 versus 10–11), and body colour (brown to dark brown versus light tan); differs from E. menezesi by the tail slime pores (11–14 versus 14–18), total slime pores (78–86 versus 86–94), and ventral finfold colour (brown versus whitish margin); it differs from E. strahani by having visible (versus absent) eyespots, rounded (versus slit-like) 1st few branchial apertures, vestigial (versus welldeveloped) ventral finfold (0.17–0.64%TL versus 1.12–1.16%TL), rounded (versus angled) ventral caudal fin profile, and shallower tail depth (8.1–10.6%TL versus 10.9–12.7%TL); differentiation from E. cirrhatus by the prebranchial slime pores (12–15, modally 14 versus 15– 18, modally 16), its more robust appearance (body depth 8.9–12.0% TL versus 5.9–11.2% TL, often <8.6% TL), and body colour (brown to dark brown versus dark brown to purple-brown); some, and often most, slime pores of E. cirrhatus have a narrow white rim, whereas slime pores in E. cryptus sp. nov. are the same colour as the rest of the body; care must be taken not to interpret residual slime or internal structure of the slime pore for the presence of a white rim; Eptatretus cryptus differs from E. goliath by the trunk slime pores (46–54 versus 56–60) and total slime pores (78–86 versus 89–95); the following character can also help in dissociating E. cryptus from E. goliath: preocular length (>4.8 versus 3.7–5.2% TL) and prebranchial length (>20.3 versus 18.3–20.9% TL) (Ref. 115309).

биология     глоссарий (например epibenthic)

Its biology is largely unknown because it has been misidentified as the common hagfish E. cirrhatus; its stable carbon and nitrogen isotope signature indicated that this species feeds at a high trophic level, 3 levels above primary producers (Ref. 115309).

Life cycle and mating behavior половая зрелость | размножение | нерест | икра | Fecundity | личинки

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(Ref. )

Статус Красного Списка МСОП (Ref. 120744)

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей


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дополнительная информация

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обмен веществ
половая зрелость
Spawning aggregation
Развитие икры
Зависимость между длиной и массой тела
Зависимость между длинами
Размерный состав
динамика численности личинок
аквакультура (рыбоводство)
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ресурсы в Интернет

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 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):  4.6   ±0.6 se; Based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref. 120179):  .
Уязвимость (Ref. 59153):  Moderate to high vulnerability (52 of 100) .