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Suoi Cat stream, Quang Dien district, Vietnam

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Viet Nam, Quang Thai Commune, Hue City

Suoi Cat is located in Quang Thai commune, Quang Dien district, Hue city, Vietnam. This is a wild stream with underground water all year round, a very special ecosystem and a characteristic black water color. The beautiful landscape here and the diverse and rich flora have become the inspiration to create this population of organisms, especially Tanichthys micagemmae. They are quite common in this place with the habit of swimming in schools and swimming quite fast with community residents such as Oryzias pectoralis with Trichopsis vittata.

Submitted by
Nguyễn Thị Kim Khoắc
Approved by
Heiko Blessin, Heok Hee Ng & Greg Martin
GPS
16.5833721, 107.4226303
Geographical region
Southeastern Asia
Drainage Basin
East Coast
River catchment
Suoi Cat (Sand Stream)
Water body type
Stream
Water body name
Suoi Cat
Water body part
Water body course
Source
Water body: tributary of
Stream
Tributary name
Bau Sen

Videos above and below water


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Water Chemistry

Water information

Water type
fresh-water
Water color
Black water
Water transparency
Medium
Concentration of sediments
Low
Water temperature
24 °C
Water flow/curent
Slow

Chemical parameters

pH
6.5
Conductivity
645
GH
38.7 mg/l
dGH
KH
6 mg/l
dKH
Dissolved Oxygen
74 %

Substrate in nature

Sand
White
Pebble/Gravel
Grey
Stone
None
Stone form
Irregular
Silt/Mud
None
Leaves
Many
Driftwood
Few
Submerged terrestrial vegetation
Yes

Aquatic Biotope

Date of collecting
20 January, 2025
Collecting area
Open water
Water depth
0,5m
Air temperature
28 °C
Sunlight
Partial shade

Environment

Environment
Untouched
Surrounding area

Suoi Cat, Quang Thai commune, Quang Dien district, Hue city, Vietnam is a wild stream that attracts many animals to live here. There are many species of birds, reptiles and fish. In the rainy season, the temperature here is about 24°, which is an ideal place for birds and plants to grow.

Underwater landscape

The water in this area has a lot of driftwood and fallen dry leaves, creating a beautiful black water color for the native fish here. Tanichthys micagemmae swims in schools looking for food in the fallen leaves, which is very beautiful. The Oryzias pectoralis swims in schools on the water surface, their eyes glow in the black water, which is very cool, which is what I find interesting. And the Trichopsis vittata lives in the branches of driftwood and that place is also an ideal hiding place.

Fish list:

  • Tanichthys micagemmae (Cyprinidae)
  • Oryzias pectoralis (Adrianichthyidae)
  • Trichopsis vittata (Osphronemidae)

Terrestrial vegetation list:

  • Acacia auriculiformis (Fabaceae)
Threats to ecology

Although this place is not known to many people, if the timber of Acacia auriculiformis is exploited, it could be a threat to the creatures here.

Riparian zone

Trees near the aquatic habitat
Many -

Bibliography

Comment by the expert

Heok Hee Ng: Bibliography for BIN writeup is inappropriate.

Greg Martin: Very well researched.