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Misgurnus anguillicaudatus (Cantor, 1842)

Pond loach
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Philippines country information

Common names: Dojo, Japanese loach, U-u
Occurrence: introduced
Salinity: freshwater
Abundance: | Ref:
Importance: of no interest | Ref:
Aquaculture: commercial | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Introduced in Trinidad River, Mountain Province (Ref. 280). This species is popularly called yu-yu in Ifugao. It has become notably abundant after the Japanese occupation for which reason (probably) it has also come to be known as Japanese fish, panispis, or palispis in some places. Yu-yu has since become a major source of fish protein in the region, particularly in many areas beyond the reach of fresh fish from the coasts. This freshwater demersal species prefers muddy substrates, still waters, a subtropical climate (between 5 and 25°C) and seems to be omnivorous. It is no surprise therefore that this species has found an ideal home in the rice terraces of the Cordilleras and has been practically a care-free aquaculture species, well integrated with the organic-farming practices in the region over several decades. Also Ref. 1739, 12157, 119549. Recently catches have declined to very low levels such that even local demands could not be met. The introduction of some freshwater species and some changes in farming practices are believed to have contributed much to the decline and seem to threaten the survival of this fish in the rice fields. The demand for this organically-grown fish has increased not only in the region but also abroad. This fish is now being promoted in the region as a health food, being 70% protein, 20% calcium and practically no cholesterol, according to findings by the Bureau of Foods and Drug (BFAD). In line with the One-Town-One-Product (OTOP) program of the Philippine government, the municipality of Hungduan has adopted yu-yu as its OTOP. The municipal government has alloted PhP 300,000.00 annually for the improvement of yu-yu production for the local market and abroad. The Ifugao provincial government also supports this OTOP and the Bureau of Fisheries and Aquatic Resources (BFAR) is involved in the development of aquaculture technology for yu-yu. Traditionally, the rice terraces in Ifugao are open access in terms of fish, shell fish and other non-crop farm products. Now the municipality of Hungduan limits fishing access to individual owners of the rice fields as a way of helping owners manage their own yu-yu resource. Likewise, the municipality has banned the use of vine extracts (rotenone and the like) for catching yu-yu as this method kills young fish as well and could be a health risk to humans. Beyond meeting current market demands, the improvement of yu-yu production in the rice terraces is seen on the long-term as an incentive to farmers to maintain the rice terraces as a cultural heritage and to keep their organic farming practices. It is also hoped that this would help prevent the out migration of more farmers from the region in search of more profitable farming opportunities in the lowlands. (CB). Collected from Antadas Ricefields, Sagada, Mountain Province as specimen for living fish museum (Ref. 81820).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Juliano, R.O., R.D. Guerrero III and I. Ronquillo, 1989
National Database:

Common names from other countries

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Cypriniformes (Carps) > Cobitidae (Spined loaches)
Etymology: anguillicaudatus: To check: Nicolas: Find another reference..

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 居于水底的; 深度上下限 5 - ? m (Ref. 27732).   亞熱帶的; 5°C - 25°C (Ref. 2060); 53°N - 27°S

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Asia: Native to Siberia (Tugur and Amur drainages), Sakhalin, Korea, Japan, China south to northern Vietnam. Europe: Introduced in several localities in Rhine (Germany) and Ticino (Italy, north of Milano) drainages, Aral Sea basin, North America, Australia and Hawaii. This species proved successful in the aquarium fish trade and has also been introduced to other countries (Ref. 1739). At least one country reports adverse ecological impact after introduction.
亞洲: 緬甸與東北亞而且向南至中國中部。 這種證明成功的在水族館魚中交易而且已經也被引進其他的國家.(參考文獻 1739) 至少一個國家報告引入後的不利的生態衝擊。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 28.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 59043); common length : 15.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 12193)

简单描述 型态特徵 | 形态测量图

Dorsal view shows the male with larger pectoral fins and the female with fuller abdomen (Ref. 44091). Body is mottled with darker greenish-gray to dark brown markings, against a yellow-brown to brown color; conspicuous adipose crests along the ventral and dorsal mid-lines of the caudal peduncle; 10 barbels; suborbital spine hidden in the skin (Ref. 27732).
背面显示雄鱼有较大的胸鳍而且雌鱼有半圆型锤腹部。 (参考文献 44091) 身体参杂着比较深色的灰绿色对深褐色的斑纹, 以黄褐色或褐色为背景; 显着的脂肪冠沿着尾梗的腹与背部中线; 10个触须; 在皮肤藏的眶下骨棘.(参考文献 27732)

生物学特性     字汇 (例如 epibenthic)

Facultative air-breathing (Ref. 126274); Occurs in rivers, lakes and ponds. Also in swamps and ricefields (Ref. 27732, 119549). Prefers muddy bottoms, where they hide in the muck and leaf litter with only their heads sticking out; prefers muddy bottoms of streams and ponds; in Hawaii, can also be found under mats of honohono (Commelina diffusa and California grass (Brachiara nuatica); feeds on worms, small crustaceans, insects, insect larvae, and other small aquatic organisms (Ref. 44091).

出现于河,湖泊与池塘。 也在沼泽与稻田中.(参考文献 27732,44894) 偏爱静止或者逐渐流动的水 (参考文献 44894), 也泥底部, 在那里它们藏在垃圾与腐叶中仅伸出他们的头部; 偏爱溪流与池塘的泥底部; 在夏威夷, 也能被发现于 honohono 的垫下面 ( Commelina diffusa 与加州草 ( Brachiara nuatica); 吃蠕虫,小型甲壳动物,昆虫,昆虫幼生与其他的小水生的生物。 (参考文献 44091) 容忍温度在 2 与 30C之間, 而且能呼吸空氣在氧氣幾乎耗盡的水域中補充呼吸的需求。 通常被垂釣者使用了當作活餌,因此,逃亡也可能已經成為他們的傳佈的因素。 (參考文獻 44894)

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

Male wraps his body around the female and stimulates her to release a cloud of eggs, which the male simultaneously fertilizes (Ref. 44091).亞洲: 緬甸與東北亞而且向南至中國中部。 這種證明成功的在水族館魚中交易而且已經也被引進其他的國家.(參考文獻 1739) 至少一個國家報告引入後的不利的生態衝擊。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Talwar, P.K. and A.G. Jhingran, 1991. Inland fishes of India and adjacent countries. vol 1. A.A. Balkema, Rotterdam. i-liv + 1-541, 1 map (Ref. 4832)

世界自然保护联盟红皮书 (Ref. 130435)

  最不相关 (LC) ; Date assessed: 20 September 2011

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  潜能有害之物 (Ref. 8923)




人类利用

渔业: 商业性; 养殖: 商业性; 水族馆: 商业性; 诱饵: occasionally
FAO(养殖: 产生; ; publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00455 - 0.00605), b=3.05 (3.01 - 3.09), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
营养阶层 (Ref. 69278):  3.2   ±0.40 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=2000 eggs).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (31 of 100).
价格分类 (Ref. 80766):   Unknown.