分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Characidae (Characins; tetras)
脂鯉科 (Characins; tetras) > Stethaprioninae
Etymology: Deuterodon: Greek, deuter = second + Greek, odous = teeth (Ref. 45335); aphos: Specific name from the Greek aphos, meaning dark, obscure, in allusion to the dark color of the water of rio Lençois, the type locality..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Rio Lençois in Bahia, Brazil.
南美洲: 在 Bahia 巴西的 Rio Lencois。
大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm
Max length : 5.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 54751)
簡短描述
型態特徵 | 形態測量圖
脊椎骨: 36. Distinguished from all other characid fishes by the following combination of characters: infraorbitals fused uniquely, resulting in less than six autogenous bones; presence of a single tooth row in the premaxilla; presence of cheirodontin-like teeth, somewhat pedunculated, expanded and compressed distally, with cusps similar in shape and perfectly aligned along dorsal margin; ventral margin of toothed portion of maxillary curved towards the ventral margin of the premaxilla and maxillary teeth forming a continuous series with premaxillary teeth; margins of pre- and postzygapophyses with projections anteriorly and posteriorly directed; accumulation of epithelial cells forming globular structures distributed over head and scales; and base of anal-fin without scales covering basal portion of unbranched and anterior branched rays (Ref. 54751).
在組合特徵之後與所有的其他脂鯉科魚類魚區分了藉由: 眶下骨獨特地融合了,造成少於六個自生的硬骨; 在前頜骨有一個齒列; 有像 cheirodontin 一樣的齒, 略微有梗的, 擴大與扁長形的末梢部地, 與尖頭相似的在外形上而且完全地排列沿著上緣; 上頜骨的有齒部分的下緣向用上頜骨前的齒形成一個連續的系列的前頜骨的下緣與上顎齒彎曲; 邊緣前與後關節突用突出前面地而且朝向後面; 形成球狀的結構的上皮細胞的積聚佈滿了頭部與鱗片; 而且臀鰭基底-鰭沒有鱗片包含的不分枝而前面分支條的基部部分.(參考文獻 54751)
描述: 背鰭鰭條 ii,8,i 或 ii,9. 臀鰭棘條 iv,14, iv,15, iv,16 或 iv,17. 胸鰭鰭條 i,10 或 i,11. 胸鰭鰭條 i,7.(參考文獻 54751)
Found in shallow, headwater stream with fast water current over a rocky bottom and margin, with a small amount of riparian or submerged vegetation (Ref. 54751). Feeds on filamentous algae, terrestrial vegetal fragments and insects (Ref. 54751).
發現於淺灘了, 河川源頭水流用在一個岩石的底部與邊緣上的快速水流, 具有一個小量的河岸土地所有人或水中植物.(參考文獻 54751) 吃菌絲藻,陸棲的植物碎片與昆蟲。 (參考文獻 54751)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在 Bahia 巴西的 Rio Lencois。
Terán, G.E., M.F. Benitez and J.M. Mirande, 2020. Opening the Trojan house: phylogeny of Astyanax, two genera and resurrection of Psalidodon (Teleostei: Characidae). Zool. J. Lin. Soc. 190(4):1217-1234. (Ref. 123753)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.5 ±0.25 se; based on food items.
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).