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Characiformes (Characins) >
Characidae (Characins; tetras) > Tetragonopterinae
Etymology: Tetragonopterus: Name from Greek words: 'Tetra' meaning four; 'gonia' meaning angle; 'pteron' for fin; referring to the evident tetragonal shape of the body (Ref. 124043); franciscoensis: Named for the Rio São Francisco, where the species is well known and abundant; an adjective.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; air tawar dasar (demersal). Tropical
South America: Brazil.
Size / Weight / umur
Maturity: Lm ?  range ? - ? cm
Max length : 11.7 cm SL jantan/; (Ref. 130067); Berat maksimum terpublikasi: 55.00 g (Ref. )
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
duri punggung lunak (Keseluruhan (total)) : 9; Sirip dubur lunak: 27 - 32; vertebrata, bertulang belakang: 30. This species is distinguished from its congeners, except T. anostomus, by the following characters: olfactory lamellae 11-17 (vs. 20-41); differs from T. anostomus, T. araguaiensis with gill rakers on lower limb 11-14 (vs. 17-20); differs from T. anostomus, T kuluene by having 2 distinct humeral marks (vs. 1); differs from T. ommatus by having maxillary teeth 1-4 (vs. 7-8) and by having a mark centered on the caudal peduncle (vs. mark on the posterior portion of the caudal peduncle); differs from T. rarus without dark stripes on the flank (vs. present); differs from T. georgiae, T. rarus by having 3.5 scale rows between lateral line and pelvic-fin origin (vs. 4.5-5.5); differs from T. argenteus by predorsal scales 7-9 (vs. 11-17); differs from T. denticulatus by having humeral marks separated by only one vertical scale row (vs. humeral marks separated by three vertical scale rows). differs from T. chalceus by dentary having thinner and sharper principal teeth (vs. more robust teeth) (Ref. 124043).
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
Silva, G.S.C., B.F. Melo, C. Oliveira and R.C. Benine, 2016. Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species. Zootaxa 4200(1):1-46. (Ref. 124043)
Status IUCN Red List (Ref. 130435: Version 2024-1)
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03311 (0.01690 - 0.06487), b=2.90 (2.73 - 3.07), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Daya lenting (Ref.
120179): Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).