Main Ref. | Kramer, B., R. Bills, P. Skelton and M. Wink, 2012 |
Utseende refererar till | hane; hona |
Bones in OsteoBase |
specialiserade organ | |
annat utseende | always different morphology between mature adults |
andra färger | |
Anmärkningar | The anal fin of the mature male is broader than that of the mature female. It is inwardly indented from its anterior side. The ventral flank of the male body also in this region is curved inwards whereas that of the female is straight (Ref. 10608). |
Särskilt slående egenskaper | |
Lateral kroppsform | fusiform / normal |
Tvärsnitt | oval |
Dorsal profil av huvudet | |
Ögontyp | |
Typ av mun/snyte | |
Munnens placering | |
Type of scales | cycloid scales |
Diagnos |
Description: Body oval shape (Ref. 91771). Head broadly rounded with a small ventrally positioned subterminal mouth, situated ventral to the eye; head and body dorsolaterally compressed (Ref. 91771). Dorsal fin origin situated about two-thirds of standard length from snout, obliquely orientated, anteriorly higher and posteriorly lower, its distal margin crescentic with anterior two or three rays longer than posterior rays; 18-22 dorsal fin rays (Ref. 91771). Anal fin longer than dorsal fin, opposite dorsal fin with slightly more anterior origin, obliquely orientated, anteriorly lower and posteriorly higher, its anterior 10 or so rays longer than posterior ones, especially in males where they also appear stronger, its margin broadly rounded and rays posterior to first 10 with distal margin straight; 25-28 anal fin rays (Ref. 91771). Scales cycloid with reticulate striae, scales extending anteriorly to operculum and pectoral fins; scales on caudal peduncle circumference (Ref. 91771). Caudal peduncle slender, subcylindrical entire length, usually 19.5-23.9% of standard length. Colour: Grey-silver, underside lighter, paired fins light and transparent, goldbrownish hue on back and tail section (Ref. 91771). In preservation it is light brown, back darker, underside fair (Ref. 91771). |
Ease of Identification |
Sidolinjer | avbruten: No |
Fjäll längs sidolinje | 35 - 40 |
Porbärande fjäll längs sidolinje | |
Fjäll i lateralserie | |
Antal rader fjäll ovan sidolinje | |
Antal rader fjäll under sidolinje | |
Fjäll runt stjärtfensspole | 11 - 16 |
Skäggtömmar | |
Gälspringor (endast hos hajar/rockor) | |
Gälräfständer | |
på undre del av gälbåge | |
på övre del av gälbåge | |
totalt | |
Ryggkotor | |
preanal | |
totalt |
Egenskaper | no striking attributes |
Antal fenor | 1 |
Antal småfenor | Dorsal |
Ventral | |
Totalt antal hårda fenstrålar | 0 - 0 |
Totalt antal mjuka fenstrålar | 18 - 22 |
Fettfena | absent |
Egenskaper | forked; more or less normal |
Antal fenor | 1 |
Totalt antal hårda fenstrålar | 0 - 0 |
Totalt antal mjuka fenstrålar | 25 - 28 |
Bröstfena | Egenskaper |
Fenstrålar hårda | |
Fenstrålar mjuka | |
Bukfenor | Egenskaper |
Position | |
Fenstrålar hårda | |
Fenstrålar mjuka |