Japan country information

Common names: Dojô, Dojou, ????
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in Hokkaido (Ref. 37812). Also recorded from Lake Biwa (Ref. 78994). Considered a delicacy in Japan and a cooking method has been developed wherein live dojo are dropped in a pot of cold water containing a block of bean curd (tofu); fish burrow into the tofu and get cooked in it as the water is heated up; the block of tofu when sliced show segments of dojo (Ref. 44091). Status of threat in the 2005 Red Data Book of Shiga Prefecture: data deficient so caution needed (Ref. 79825). Also Ref. 27732, 43281. Status of threat: Data deficient (Ref. 94887).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/ja.html
National Fisheries Authority: https://www.maff.go.jp/eindex.html
Occurrences: Occurrences Point map
Main Ref: Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Cypriniformes (Carps) > Cobitidae (Loaches) > Cobitinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Вьюн восточный, 泥鳅, Loche asiatique, ... more

Main reference

Talwar, P.K. and A.G. Jhingran. 1991. (Ref. 4832)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 28.0 cm SL male/unsexed; (Ref. 59043); common length : 15.0 cm TL male/unsexed; (Ref. 12193)

Environment

Freshwater; demersal; depth range 5 - ? m (Ref. 27732)

Climate / Range

Subtropical; 5°C - 25°C (Ref. 2060), preferred ?; 53°N - 27°S

Distribution

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.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

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).

Occurs in rivers, lakes and ponds. Also in swamps and ricefields (Ref. 27732). 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).

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

Threat to humans

Potential pest (Ref. 8923)

Human uses

Fisheries: commercial; aquaculture: commercial; aquarium: commercial; bait: occasionally

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5039 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.2 ±0.40 se; Based on food items.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (Fec=2000 eggs)

Vulnerability (Ref. 59153)
Moderate to high vulnerability (50 of 100)

Price category (Ref. 80766)
Unknown

Misgurnus anguillicaudatus (Cantor, 1842)