分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Callichthyidae (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
生态学
; 淡水 居于水底的; 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 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 7.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 26041)
背棘 (总数) : 1; 背的软条 (总数) : 7; 臀棘: 1 - 2; 臀鳍软条: 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).
短的而且圆的吻;(1.9 到 2.1 倍的体全长) 身体高度 2.5 到 2.9 标准体长比率; 眼间隔 2 到 2.2 倍的体全长; 胸棘 (3.5 到 4.5 标准体长比率) 些微地具有一个有小齿状突的内在侧边; 23-24个背部的碟; 20-22个腹的碟; 2-5个前脂肪的碟; 身体黄色或粉红又白色的腹面, 蓝灰色头部与背部之上; 鳍黄色或粉红与无斑点的.(参考文献 35381) 就在背鳍之前,一个褐色- 橘色的小区块通常位于头部之上, 而且是他们的最特殊特徵当在水流中从上方看了.(参考文献 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).
大部分发现于安静了, 浅水域用软质底部 (参考文献 26041), 也居住于流动的水域.(参考文献 11225) 停留在 20 到 30个个体的鱼群中。 由于它的能力用肠道呼吸, 它采空气 1 到 45 倍每小时.(参考文献 35381) 夜行的.(参考文献 35381) 吃蠕虫，甲壳动物，昆虫与植物。 (参考文献 7020) 产卵发生在水的物理及化学质量随着改变雨季的开始.(参考文献 35381) 水族馆保持: 形成 5个或更多个体的群体; 水族馆最小体型 60 公分.(参考文献 51539)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
人类利用
渔业: 没有兴趣; 水族馆: 高经济性
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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).
营养阶层 (Ref.
69278): 3.0 ±0.34 se; based on food items.
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Fec>100 eggs; multiple spawning per spawning season).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
