Grasseichthys gabonensis

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Grasseichthys gabonensis Géry, 1964

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drawing shows typical species in Kneriidae.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Actinopteri > Gonorynchiformes (Milkfishes) 鼠□目 (Milkfishes) > Kneriidae (Shellears) 克奈魚科 (Shellears) > Kneriinae
Etymology: Grasseichthys: Greek, grassos, -ou = stink, dirt + Greek, ichthys = fish (Ref. 45335).  More on author: Géry.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 底中水層性; 深度上下限 - m (Ref. ), usually - m (Ref. ).   熱帶; 0°C -

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Africa: scattered localities in the Ivindo and the larger Ogowe basin of Gabon; reports from the central Congo basin refer to another species (Ref. 81636).
非洲: 加彭 (伊溫多河流域) ,剛果河中央流域。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 2.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 42473)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 0; 背的軟條 (總數): 7-8; 臀棘 0; 臀鰭軟條: 9 - 10; 脊椎骨: 35 - 36. Diagnosis: very small and larval in appearance; body elongate, laterally compressed, shallow (body depth 17.9-20.0% SL in females and 15.2-17.9% SL in males); scaleless; head small (head length 18.0-22.7% SL), with small, terminal mouth and large eyes; teeth absent; interorbital distance narrow (11.9-12.9% HL); gill opening short and located above pectoral fin; pectoral fins positioned ventrally and often splayed out from the body in preserved specimens; caudal peduncle long, with keels of transparent tissue, apparently anterior extensions of caudal fin membrane, reaching forward on both dorsal and ventral edge (ventral extension is more developed); caudal fin forked, with 16 rays, including an unbranched ray on dorsal and ventral edge; fin spines lacking; 2 branchiostegal rays; body semi-translucent, with myomeres clearly visible; lateral line absent; epibranchial organ reduced or absent (Ref. 81636).

生物學特性     字彙 (例如 epibenthic)

Open water species, not burrying in sand; forms schools; spawns during the raining season, during which it may be very abundant, forming aggregations in open water areas in the swamps; females of 20-24mm carry about 40 round, ripe eggs of about 0.4mm diameter; males mature at a size of about 18mm total length (Ref. 91379).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

非洲: 加彭 (伊溫多河流域) ,剛果河中央流域。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Géry, J., 1965. Poissons du bassin de l'Ivindo. I - Les biotopes. Biol. Gabon. 1(4):375-384. (Ref. 91379)

IUCN 瀕危狀態 (Ref. 124695)

  次級保育類動物, 見 IUCN 紅皮書 (VU) (B1ab(iii)+2ab(iii)); Date assessed: 16 February 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





人類使用

FAO - Publication: search | FishSource |

更多資訊

國家
FAO區域
生態系
發現紀錄
簡介
Stocks
生態學
食性
食物相
食物消耗量
定量
俗名
同種異名
新陳代謝
捕食者
生態毒物學
繁殖
成熟度
產卵場
產卵群集
孕卵數

卵發育
年龄/大小
成長
長度-重量
長度-長度
長度-頻率
形態測量圖
型態特徵
仔魚
稚魚動力學
入添量
豐度
BRUVS
參考文獻
養殖
養殖資訊
品種
遺傳學
基因序列
遺傳率
疾病
加工
Nutrients
Mass conversion
合作者
照片
Stamps, Coins Misc.
聲音
神經毒
速度
泳型
鰓區
Otoliths
腦重體重比
眼睛色素

工具

特別的報告

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網路資源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes: , | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: 基因組, 核甘 | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 樹狀分類階層 | Wikipedia: , 搜尋 | World Records Freshwater Fishing | Zoobank | 動物學的記錄

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [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).
回復力
瀕危性 (Ref. 59153):  Low vulnerability (10 of 100) .