分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Loricariidae (Armored catfishes)
甲鯰科 (Armored catfishes) > Hypostominae
Etymology: jariensis: The specific name jariensis is used in reference to the type locality, the rio Jari, a large tributary of the rio Amazon basin.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的.
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: Rio Jari basin in Amapá State, Brazil.
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 6.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 118148)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 2; 背的軟條 (總數) : 7; 臀棘: 1; 臀鰭軟條: 5. Lithoxus jariensis is distinguished from its congeners L. surinamensis and L. pallidimaculatus by having an adipose fin (vs. adipose fin absent); from L. bovallii by the lack of an irregular concentration of chromatophores around the anal-fin origin and adjacent region (vs. present), and by having three dark bands in the caudal fin (vs. five dark bands); from L. lithoides and L. jantjae by having five branched rays in the anal fin (vs. four); from L. pallidimaculatus and L. raso by the lack of light spots on the body (vs. light spots on the body present); from L. jantjae by having 14 branched rays in the caudal fin (vs. 12); and from L. stocki by having medial premaxillary teeth with an enlarged and widened cusp (vs. cusps of all premaxillary teeth similar in size, not enlarged), and 5-8 dentary teeth (vs. 10-12). In addition, Lithoxus jariensis can be diagnosed from L. boujardi by having a greater adipose-spine length, 6.2-10.1% SL (vs. 3.6-4.7% SL), and by having a greater dorsal adipose-caudal distance, 12.0-16.5% SL (vs. 10.3-11.7% SL); from L. planquettei by smaller caudal peduncle depth, 7.6-8.7% SL (vs. 9.7-10.5% SL), and by having a straight adipose-fin spine (vs. a curved adipose-fin spine); and from L. stocki by having a shorter cleithral width, 27.8-31.2% SL (vs. 32.6-34.2% SL), and a greater dorsal-anal distance, 10.4-13.7% SL (vs. 8.8-10.4% SL) (Ref. 118148).
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274); Inhabits the bottom of fast-flowing clear-water rivers of medium to large size. The bottom of the rivers consists of small to large rocks, loose stones, and sand (Ref. 118148).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Silva, G.S.C., R. Covain, C. Oliveira and F.F. Roxo, 2017. Description of two new species of Lithoxus (Hypostominae: Loricariidae) from rio Jari and rio Amapá basins, Brazillian Guiana shield. Zootaxa 4347(1):151-168. (Ref. 118148)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00726 - 0.03306), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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