分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Centrarchiformes (Basses)
鱸形目 (Basses) >
Percichthyidae (Temperate perches)
鮨鱸科 (Temperate perches)
Etymology: Percichthys: Greek, perke = perch + Greek, ichthys = fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 亞熱帶的
South America: Colhue Huapi lake, Chubut, Negro, Limay and Colorado rivers, Tulumaya stream and Puente de Fierro lake in Argentina.
南美洲: 在阿根廷的 Colhue Huapi 湖， Chubut ，尼格羅河， Limay 與科羅拉多河， Tulumaya 水流與 Puente de Fierro 湖。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 59.1 cm TL (female)
簡短描述
型態特徵 | 形態測量圖
臀鰭軟條: 8 - 11. Differs from its congeners by the mouth isognathous or prognathous (vs. hypognathous); infraorbital 2 rectangular, completely serrated ventrally (vs. irregularly shaped, smooth or partially serrated ventrally); palatine with long dentigerous process (vs. short dentigerous process); dentigerous arm of premaxilla about 2.5 times height of ascending process (vs. about 2 times or less that height); small process for insertion of ligamentum primordium on maxilla; long coronoid process, reaching posteriorly the level of the posterior border of dentary (vs. not reaching posterior border of dentary); long anguloarticular bone, with well-developed, posterodorsally directed postarticular process and mandibular sensory canal completely enclosed in bone, hyoid artery in a groove on posterior surface of dorsal hypohyal ( vs. hyoid artery piercing dorsal hypohyal); dorsal border of anterior ceratohyal only smoothly concave. Differs further by the following combination of characters: quadrate-mandibular articulation just behind orbit; posterior border of maxilla reaching middle of orbit or further backwards, at posterior half of infraorbital 2 or further backwards; 3 predorsal bones; one supernumerary spine on first dorsal pterygiophore (rarely none); 3rd or 4th dorsal fin spine the longest; 7-9 trisegmented pterygiophores in dorsal fin; upper jaw length 130-160% snout length and 35-45% HL; head length 30-38% SL; pectoral and pelvic fins of similar length, being 45-60% HL and 55-75% body depth; 14-17 pectoral fin rays; 8-11 anal fin rays; 45-49 caudal fin rays; procurrent spur present (Ref. 55324).
有別於嘴巴 isognathous 的它的同類或下巴突出的;(vs. hypognathous) 眶下的 2 矩形的, 完全地腹地鋸齒狀的;(vs. 形狀不規則的, 平滑的或部份地腹地鋸齒狀的) 顎骨有長的齒狀突起;(vs. 短的齒狀突起) 前頜骨的有齒手臂大約 2.5個次高度向上突起;(vs. 大約兩倍以內那高度) 為在顎骨上的 ligamentum 原基的嵌入的小突起; 長的下顎齒骨冠突, 在後部地達到齒骨的後緣的水平;(vs. 不達到的齒骨的後緣) 長的 anguloarticular 硬骨, 有發展良好的, 背部後方地直接的在凹槽背部 hypohyal 的在後部表面是隔絕於完全地中的硬骨 , U 字形的動脈的 postarticular 突起與顎骨知覺管;( vs. U 字形的動脈刺骨的背部 hypohyal) 前面角舌骨的背部邊緣只有平滑地凹曲。 在組合特徵之後不同進一步藉由: 方骨-顎骨的關節在眼窩正後方; 顎骨的後緣達到眼窩的中央或進一步向後, 在後半段眶下的 2 或進一步向後; 3個前背骨; 在第一背鰭支鰭骨上的一根額外的棘;(很少地沒有) 第三或第 4根背鰭棘最長的; 在背鰭的 7-9個 trisegmented 支鰭骨; 上頜長度 130-160% 吻的長度與 35-45% HL; 頭長 30-38% SL; 胸鰭與相似長度，存在 45-60% HL 與 55-75% 體高的腹鰭; 14-17個胸鰭鰭條; 8-11個臀鰭棘條; 45-49個尾鰭鰭條; 前流的馬刺呈現。 (參考文獻 55324)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在阿根廷的 Colhue Huapi 湖， Chubut ，尼格羅河， Limay 與科羅拉多河， Tulumaya 水流與 Puente de Fierro 湖。
López-Arbarello, A., 2004. Taxonomy of the genus Percichthys (Perciformes: Percichthyidae). Ichthyol. Explor. Freshwat. 15(4):331-350. (Ref. 55324)
人類使用
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [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): 4.2 ±0.2 se; based on diet studies.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
