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Johnius elongatus Lal Mohan, 1976

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

Teleostei > Eupercaria/misc (Various families in series Eupercaria) 鱸形目 (Various families in series Eupercaria) > Sciaenidae (Drums or croakers) 石首魚科 (Drums or croakers)
Etymology:

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

海洋 居於水底的; 深度上下限 ? - 30 m (Ref. 3490). 熱帶

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

Western Indian Ocean: west coast of India and Sri Lanka.
西印度洋: 印度西岸與斯里蘭卡。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3490); common length : 20.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3490)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 10 - 11; 背的軟條 (總數) : 25 - 29; 臀棘: 2; 臀鰭軟條: 7. Snout swollen, projecting beyond the ventral mouth. Mental pores surrounded by thickened skin, produced into two short, irregular tags between the median and first lateral pores. Teeth differentiated into large and small upper jaw, those in the outer row close-set and enlarged, but not canine-like. Lower jaw teeth uniformly villiform. Sagitta with a tadpole-shaped impression, the "tail" of which is expanded and deepened as a hollow cone. Gillrakers short and narrow, 6 or 7 on lower limb of first arch. Second part of dorsal fin with 1 spine and 25-229 soft rays. Swim bladder hammer-shaped, with 13 or 14 pairs of arborescent appendages, the first branching in the head.
吻腫大的, 突出的超過腹的嘴。 神經孔被被伸展到二個短的變粗的皮膚,在中動脈與第一個側面的孔之間的不規則的標籤包圍了。 齒分化成大而小的上頜, 那些在外部的列靠攏在一起與增大的, 但是不是像犬齒一樣。 下頜齒均勻絨毛狀。 矢耳石具有一個蝌蚪-形狀的印象," 尾部 " 是如一個凹陷的圓錐體擴大而且加深。 鰓耙短與狹窄的,6 或 7 在第一鰓弓的下肢上。 背鰭有的第二個部份 1根棘與 25-229個軟鰭條。 泳鰾鎚型, 與 13 或 14 對樹枝狀的附肢, 在頭部的第一個分岐。

生物學特性     字彙 (例如 epibenthic)

Occurs in coastal waters. Feeds on benthic worms and crustaceans. Marketed fresh and also dried salted.

出現於沿岸水域。 吃底棲的蠕蟲與甲殼動物。 在市場上銷售生鮮地了以及乾燥鹽醃。

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

西印度洋: 印度西岸與斯里蘭卡。

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

Lal Mohan, R.S., 1984. Sciaenidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51). Vol. 4. FAO, Rome. pag. var. (Ref. 3490)

IUCN 瀕危狀態 (Ref. 130435)

  資料不足 (DD) ; Date assessed: 27 September 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





人類使用

漁業: 商業性
FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00410 - 0.01937), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.3   ±0.39 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 (20 of 100).
價格種類 (Ref. 80766):   Medium.