| 主な参照 | Nakamura, I. and N.V. Parin, 1993 |
| Appearance refers to | |
| Bones in OsteoBase |
| 専門の臓器 | |
| 異なる出現 | |
| 異なる色 | |
| 意見 |
| 目立つ特徴 | striking shape of body |
| 身体の側面 | elongated |
| 横断面 | compressed |
| 後頭部の側面 | more or less straight |
| 目の種類 | more or less normal |
| 目/鼻の種類 | more or less normal |
| 口の場所 | superior |
| Type of scales | scales embedded or partly/completely absent |
| 診断 |
Body extremely elongate, compressed and tapering to a point. Mouth very large with a small dermal process at the tip of each jaw. Pelvic and caudal fins absent. Lateral line originating at the upper margin of the gill cover, running obliquely to behind the tip of the pectoral fins, then parallel to the ventral contour of the body. Fresh specimens are pearl white and slightly dusky dorsally; the margins of the dorsal and anal fins dusky in formalin. |
| Ease of Identification |
| 側線 | 1 中断された: No |
| 側線ラインの長さ | |
| Pored lateral line scales | |
| Scales in lateral series | |
| 側線ラインより上の規模 | |
| 側線ラインより下の規模 | |
| 側線（尾鰭付近）周囲の規模 | |
| ひげ | 0 |
| 鰓(サメ/エイのみ) | |
| 鰓篩 | |
| 下部のヒレに | |
| 上部のヒレの上に | |
| 合計 | |
| 脊つい | |
| 肛門前方の | |
| 合計 |
| 属性 | extending over most of the back length |
| 鰭の数 | 1 |
| 小離鰭の数 | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| 脊椎の合計 | 3 - 3 |
| 全体の鰭 | 106 - 116 |
| 脂びれ | absent |
| 属性 | other (see diagnosis) |
| 鰭の数 | 1 |
| 脊椎の合計 | |
| 全体の鰭 | 80 - 80 |
| 胸の | 属性 more or less normal |
| 脊椎 1 | |
| 鰭 9 - 9 | |
| 骨盤の | 属性 other (see diagnosis) |
| 場所 | |
| 脊椎 | |
| 鰭 |