分类 / Names
俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Myxini 盲鳗纲 (丑鱼) (hagfishes)
(Hagfishes) > Myxinidae
(Hagfishes) > Eptatretinae
Etymology: Eptatretus: Greek, epta = seven + Greek, tretos, -e, -on = with holes (Ref. 45335).
环境 / 气候 / 范围
; 海洋 深海底的; 非迁移的; 深度上下限 0 - 1100 m (Ref. 89422), usually 40 - 700 m (Ref. 31276). , preferred ?
Western Pacific: southern and eastern Australia and New Zealand.
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 97.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 101563)
型态特徵 | 形态测量图
背棘 (总数): 0; 背的软条 (总数): 0; 臀棘 0; 臀鳍软条: 0. This species differs from all its congeners except E. caribbeaus, E. goliath,
E. menezesi and E. strahani by having 7 pairs of gill pouches and three-cusp multicusps on the anterior and posterior rows of cusps. It differs from E. caribbeaus in number of anterior unicusps (8-11 vs. 11-13), posterior unicusps (7-9 vs. 10-11), total cusps (43-51 vs. 54-58) and prebranchial pores (16-20 vs. 13-15); from E. goliath in number of anterior unicusps (8-11 vs. 11-13), total
cusps (43-51 vs. 54) and trunk pores (46-53 vs. 57-58); from E. menezesi in number of posterior unicusps (7-9 vs. 9-12), total cusps (43-51 vs. 52-60), tail pores (10-14 vs. 14-18); from E. strahani by its number of prebranchial pores (16-20 vs. 13-16) (Ref. 85052).
Occurs on soft bottoms of the continental slope (Ref. 7300). Able to form locally abundant populations and is often associated with inshore reefs (Ref. 85052).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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 ).
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)
CITES (Ref. 94142)
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=0.00295 (0.00163 - 0.00533), b=2.95 (2.78 - 3.12), based on LWR estimates for this species & (Sub)family-body (Ref. 93245
营养阶层 (Ref. 69278
): 5.0 ±0.50 se; Based on food items.
回复力 (Ref. 69278
): 低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
脆弱性 (Ref. 59153
): Moderate to high vulnerability (52 of 100) .