Vietnamese eels and japanese eels pdf

Translated by Ichiro Hayashi
Written by Atsushi Asui
Presenters: Quân, Ngọc, Thuật, Trâm, Vân

MAIN PARTS
1
General
knowledge
about
Species of
eels
2
Differences
of
Vietnamese
eels and
Japanese
eels
3
Life style
of
Japanese
eels

Common
knowledge
Characteristics
Quantities
Living
places

COMMON KNOWLEDGE

Quantities
600 species
12 families
COMMON KNOWLEDGE

Common
knowledge
Characteristics
Quantities
Living
places
COMMON KNOWLEDGE

Living
places
Freshwater
(fry and young fish)
Seawater
(adult)
COMMON KNOWLEDGE

Common
knowledge
Characteristics
Quantities
Living
places
COMMON KNOWLEDGE

Characteristics
Hermaphrodite
(lưỡng tính)
Without scale
smooth skin
Breathing through
abdominal cavity
COMMON KNOWLEDGE

Japanese eel
Kingdom
(giới)
Animalia
Phylum
(ngành)
Chordata
Class (lớp) Actinopterygii
Order (bộ) Anguiliformes
Family (họ) Anguilidae
Genus (chi) Angulia
Species (loài) Japonica
Binomial
name (tên ghép)
Anguilla
japonica
Vietnamese eel
Kingdom
(giới)
Animalia

Phylum
(ngành)
Chordata
Class (lớp) Actinopterygii
Order (bộ) Synbranchiformes
Family (họ) Synbranchidae
Genus (chi) Monopterus
Species
(loài)
M. Albus
Binomial
name (tên
ghép)
Monopterus Albus
SCIENTIFIC CLASSIFICATION

MAIN PARTS
1
General
knowledge
about
Species of
eels
2
Differences
of
Vietnamese
eels and
Japanese
eels

3
Life style
of
Japanese
eels

Name
Characters
Fluta alba
A.japonica
Size (cm) 25-40 35-60
Weight (gram) 2000 70-350
Spawning
season
Late spring
(March – April)
Midsummer
(May – June)
Land
distribution
India, China,
Malaysia,
Vietnam
Japan, Korea,
Taiwan, China
Temperature
(
O
C)
25-28 25-30

COMPARISION

MAIN PARTS
1
General
knowledge
about
Species of
eels
2
Differences
of
Vietnamese
eels and
Japanese
eels
3
Life style
of
Japanese
eels

LIFE CYCLE OF EELS

LIFE CYCLE OF EELS

LIFE CYCLE OF EELS

LIFE CYCLE OF EELS

LIFE CYCLE OF EELS

Active at night.
Have strong instinct to swim against any water current.
Water temperature: 8 – 10oC.
About 6 cm long and transparent
December – April, entering river from sea.
GLASS
GLASS
EEL
EEL
(lươn
(lươn
kính)
kính)
After some weeks, glass eel becomes black in colour.

After some two weeks,
elver becomes brownish yellow.
Length: 15cm.
Food: insects, worms.
Summer temperature: 25-32oC.
Places: rivers, ponds, streams all over countryside.
ELVER
ELVER
(lươn
(lươn
con)
con)

The eels reach adult size
The sexual organs can be distinguished.
Length: 30 cm.
Live: 5-10 years in wild.
Brown-
Brown-
stage
stage
eel
eel
(lươn
(lươn
nâu)
nâu)

On dark autumn nights, the eels
On dark autumn nights, the eels
migrate down the river into the sea
migrate down the river into the sea
A metallic silvery colour develops under the skin of
A metallic silvery colour develops under the skin of
the eel giving the belly a silvery white appearance.
the eel giving the belly a silvery white appearance.
A great amount oil are stored and they stop feeding.
A great amount oil are stored and they stop feeding.
Eels go out to the distant ocean spawning grounds.
Eels go out to the distant ocean spawning grounds.
Spawning
Spawning
-season

-season
(mùa sinh
(mùa sinh
sản)
sản)

REFERENCES

SUMMARY
VIETNAMESE EELS AND JAPANESE EELS
VIETNAMESE EELS AND JAPANESE EELS
VIETNAMESE EELS AND JAPANESE EELS
VIETNAMESE EELS AND JAPANESE EELS
COMPARISION
COMMON
COMMON
KNOWLEDGE
KNOWLEDGE
LIFE
LIFE
HISTORY
HISTORY
LEAD TO

SUMMARY
4 STAGES OF EELS
4 STAGES OF EELS
SILVER EEL
BROWN-
STAGE EEL

ELVER
GLASS EEL

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