Main Ref. | Bigorne, R., 2003 |
Utseende refererar till | |
Bones in OsteoBase |
specialiserade organ | no special organs |
annat utseende | males alike females |
andra färger | males alike females |
Anmärkningar |
Särskilt slående egenskaper | none |
Lateral kroppsform | elongated |
Tvärsnitt | circular |
Dorsal profil av huvudet | more or less straight |
Ögontyp | more or less normal |
Typ av mun/snyte | more or less normal |
Munnens placering | terminal |
Type of scales | cycloid scales |
Diagnos |
Diagnosis: body very elongate (Ref. 28714, 81275), anguilliform (Ref. 81275), its depth 7.2-10.6 times in SL, and covered with tiny scales (Ref. 2915, 81275). Lateral line complete (Ref. 81275). Dorsal fin soft-rayed, extending almost over the entire length of back (Ref. 81275), stopping short of a naked tail (Ref. 28714). Pelvic, anal and caudal fins absent (Ref. 28714, 81275), body ending in a thin/sharp point (Ref. 2915, 81275). Pectoral fins reduced (Ref. 81275), 1.9-5.0 times in head length (Ref. 2915, 81275). Head naked, its length 5.6-6.9 times in SL; snout prominent (Ref. 2915, 81275). Mouth large and terminal; teeth strong, pointed or notched, aligned in a single row in both jaws, 12-16 in upper, 22-28 in lower jaw; premaxillae, as well as vomer and palatines, coalesced; maxillae, vomer and palatines toothless; eye very small, without a free margin (covered by skin); only the left gonad is developed and functional (Ref. 81275). Coloration: dark grey to almost black, darker posteriorly; belly whitish (Ref. 81275). |
Ease of Identification |
Sidolinjer | 1 avbruten: No |
Fjäll längs sidolinje | |
Porbärande fjäll längs sidolinje | |
Fjäll i lateralserie | |
Antal rader fjäll ovan sidolinje | |
Antal rader fjäll under sidolinje | |
Fjäll runt stjärtfensspole | |
Skäggtömmar | 0 |
Gälspringor (endast hos hajar/rockor) | |
Gälräfständer | |
på undre del av gälbåge | |
på övre del av gälbåge | |
totalt | |
Ryggkotor | |
preanal | |
totalt |
Egenskaper | extending over most of the back length |
Antal fenor | 1 |
Antal småfenor | Dorsal |
Ventral | |
Totalt antal hårda fenstrålar | 0 - 0 |
Totalt antal mjuka fenstrålar | 183 - 230 |
Fettfena | absent |
Egenskaper | other (see remark) |
Antal fenor | |
Totalt antal hårda fenstrålar | |
Totalt antal mjuka fenstrålar |
Bröstfena | Egenskaper more or less normal |
Fenstrålar hårda | |
Fenstrålar mjuka 9 - 10 | |
Bukfenor | Egenskaper suppressed/absent |
Position | |
Fenstrålar hårda | |
Fenstrålar mjuka |