分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Callichthyidae (Callichthyid armored catfishes)
美鯰科 (Callichthyid armored catfishes) > Corydoradinae
Etymology: Corydoras: Greek, kory = helmet + greek, doras = skin (Ref. 45335).
More on author: Gill.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; pH range: 6.0 - 8.0; dH range: 5 - 19. 亞熱帶的; 25°C - 28°C (Ref. 30491)
South America: Colombia and Trinidad to La Plata River basin east of the Andes.
南美洲: 對 La Plata 河流域的哥倫比亞與千里達安迪斯山脈以東。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 7.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 26041)
背棘 (總數) : 1; 背的軟條 (總數) : 7; 臀棘: 1 - 2; 臀鰭軟條: 5 - 6. Short and rounded snout (1.9 to 2.1 times in TL); body height 2.5 to 2.9 times in SL; interorbital space 2 to 2.2 times in TL; pectoral spine (3.5 to 4.5 times in SL) with a slightly denticulated internal side; 23-24 dorsal plates; 20-22 ventral plates; 2-5 pre-adipose plates; body color yellow or pink, white belly, blue-grey over head and back; fins yellow or pink and immaculate (Ref. 35381). A brownish-orange patch is usually present on the head, just before the dorsal fin, and is their most distinctive feature when viewed from above in the stream (Ref. 44091).
短的而且圓的吻;(1.9 到 2.1 倍的體全長) 身體高度 2.5 到 2.9 標準體長比率; 眼間隔 2 到 2.2 倍的體全長; 胸棘 (3.5 到 4.5 標準體長比率) 些微地具有一個有小齒狀突的內在側邊; 23-24個背部的碟; 20-22個腹的碟; 2-5個前脂肪的碟; 身體黃色或粉紅又白色的腹面, 藍灰色頭部與背部之上; 鰭黃色或粉紅與無斑點的.(參考文獻 35381) 就在背鰭之前,一個褐色- 橘色的小區塊通常位於頭部之上, 而且是他們的最特殊特徵當在水流中從上方看了.(參考文獻 44091)
Facultative air-breathing (Ref. 126274); Found mostly in quiet, shallow waters with soft bottoms (Ref. 26041), but also inhabits running waters (Ref. 11225). Benthic (Ref. 58302). Stays in schools of 20 to 30 individuals. Because of its ability to breathe air intestinally, it takes air 1 to 45 times per hour (Ref. 35381). Nocturnal (Ref. 35381). Feeds on worms, crustaceans, insects and plant matter (Ref. 7020). Spawning occurs when the physical-chemical quality of the water changes with the onset of the rainy season (Ref. 35381). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).
大部分發現於安靜., 淺水域用軟質底部 (參考文獻 26041), 也居住於流動的水域.(參考文獻 11225) 底棲的.(參考文獻 58302) 停留在 20 到 30個個體的魚群中。 由於它的能力用腸道呼吸, 它採空氣 1 到 45 倍每小時.(參考文獻 35381) 夜行的.(參考文獻 35381) 吃蠕蟲，甲殼動物，昆蟲與植物。 (參考文獻 7020) 產卵發生在水的物理及化學品質隨著改變雨季的開始.(參考文獻 35381) 水族館保持: 形成 5個或更多個體的群體; 水族館最小體型 60 公分.(參考文獻 51539)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
During the spawning process, corys assume the so-called "T" position, with the male assuming the top part of the "T" and the femalae oriented perpendicular to him (Ref. 44091). The male stirs up the female with his barbels on her head and back; the female collects sperm in its mouth; lays down about 20 eggs (yellow in color, 1 mm in size) which she collects with her pelvic fins, then fertilizes them and fixes them to submerged rocks or plants. Such sequence takes place for 2-3 hours, thus resulting in spawning of 100-200 eggs. Several spawnings are possible in the same season. At 22°C, hatching occurs after 5 days, the vitellin being absorbed 3 days later (Ref. 35381).南美洲: 對 La Plata 河流域的哥倫比亞與千里達安迪斯山脈以東。
Burgess, W.E., 1989. An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p. (Ref. 6868)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 07 November 2018
人類使用
漁業: 沒有興趣; 水族館: 高經濟性
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02399 (0.01340 - 0.04294), b=3.07 (2.92 - 3.22), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±0.34 se; based on food items.
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Fec>100 eggs; multiple spawning per spawning season).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
