Main Ref. | Silva, G.S.C., B.F. Melo, C. Oliveira and R.C. Benine, 2016 |
Utseende refererar till | |
Bones in OsteoBase |
specialiserade organ | |
annat utseende | |
andra färger | |
Anmärkningar | Adult males with bony hooks on distal segments of the first 12 branched rays of the anal fin; i.e., 2 bony hooks per segment (Ref, 124043). |
Särskilt slående egenskaper | |
Lateral kroppsform | |
Tvärsnitt | compressed |
Dorsal profil av huvudet | |
Ögontyp | |
Typ av mun/snyte | |
Munnens placering | |
Type of scales | |
Diagnos |
This species is distinguished from all its congeners by the number of maxillary teeth 7-8 (vs. 1-6) and the dark, vertically-oriented patch of dark pigmentation limited to the posterior portion of the caudal peduncle (vs. mark centered on the caudal peduncle); differs from T. anostomus, T. denticulatus, T. kuluene by the principal teeth on dentary 4 (vs. 5-6) and by having more robust dentary teeth (vs. thinner and sharper teeth); differs from T. anostomus by having a terminal mouth (vs. subsuperior mouth) and by having two conspicuous humeral marks (vs. only one humeral mark); differs from T. anostomus, T. araguaiensis by the number of gill rakers on the of the first gill arch lower (13-15) and upper (8-9) limbs (vs. 17-20 and 10-12, respectively); differs from T. argenteus by the predorsal scales 8 (vs. 11-17); differs from T. carvalhoi by having a rounded dark mark on the caudal peduncle (vs. a lozenge-shaped dark mark); differs from T. rarus, T. georgiae by the scale rows between lateral line and pelvic-fin origin 3.5 (vs. 4.5-5.5); differs from T. rarus by the absence of dark longitudinal stripes on the trunk (vs. presence of stripes) (Ref. 124043). |
Ease of Identification |
Sidolinjer | 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 | |
Gälspringor (endast hos hajar/rockor) | |
Gälräfständer | |
på undre del av gälbåge | 13 - 15 |
på övre del av gälbåge | 8 - 9 |
totalt | |
Ryggkotor | |
preanal | 12 - 12 |
totalt | 30 - 30 |
Egenskaper | |
Antal fenor | |
Antal småfenor | Dorsal |
Ventral | |
Totalt antal hårda fenstrålar | |
Totalt antal mjuka fenstrålar | 9 - 9 |
Fettfena |
Egenskaper |
Antal fenor | |
Totalt antal hårda fenstrålar | |
Totalt antal mjuka fenstrålar | 25 - 26 |
Bröstfena | Egenskaper |
Fenstrålar hårda | |
Fenstrålar mjuka 14 - 15 | |
Bukfenor | Egenskaper |
Position | |
Fenstrålar hårda | |
Fenstrålar mjuka 7 - 7 |