分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: alfredi: Named for Eric R. Alfred, for his pioneering work on the freshwater fish fauna of Peninsular Malaysia..
More on authors: Ng & Kottelat.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 熱帶
Asia: Tasek Bera in Malaysia.
亞洲: 在馬來西亞的 Tasek Bera。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 3.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 30226)
简单描述
型态特徵 | 形态测量图
背的软条 (总数): 5-6; 臀鳍软条: 8 - 10; 脊椎骨: 32 - 33. Distinguished from all its congeners by possessing tubercles with poorly-demarcated, indistinct margins (versus tubercles with well-demarcated and distinct margins) and the following combination of characters: head width 20.3-25.0% SL; body depth at anus 11.3-14.7% SL; depth of caudal peduncle 5.7-7.3% SL; pectoral-fin length 23.1-28.9% SL; interorbital distance 34-39% HL; eye diameter 7-11% HL; length of nasal barbel 29-65% HL; length of maxillary barbel 122-144% HL; length of outer mandibular barbel 88-134% HL; color pattern of dark-colored patches on a predominantly light-colored body (versus predominantly dark-colored body with light-colored patches in its congeners); and caudal fin strongly forked (Ref. 30226).
藉由用贫乏定界线又不明显的边缘 (对小瘤以很好定界线与明显的边缘) 与下列的组合特徵持有小瘤与它所有的同类区分了: 头部宽度 20.3-25.0% SL; 在肛门 11.3-14.7% SL 的体高; 尾柄 5.7-7.3% SL 的深度; 胸鳍长度 23.1-28.9% SL; 眼间距 34-39% HL; 眼直径 7-11% HL; 鼻触须 29-65% HL 的长度; 颚触须 122-144% HL 的长度; 外部颚的触须 88-134% HL 的长度; 深色区块的彩色斑纹一之上主要颜色较淡身体;(对主要深色的身体有颜色较淡区块在它的同类中) 而且尾鳍强烈地分岔.(参考文献 30226)
Recorded from small slow-flowing forested streams with acidic water (Ref. 84801).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
亞洲: 在馬來西亞的 Tasek Bera。
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628. (Ref. 58032)
人类利用
更多信息
俗名同种异名新陈代谢捕食者生态毒物学繁殖成熟度产卵场产卵群集孕卵数卵卵的发育
年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
