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Creek, Phong Nha-Ke Bang National Park, Vietnam

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Ahead through research

Viet Nam, Phong Nha-Ke Bang National Park, Quang Binh Province

A fragment of a creek from the Son River, near the world’s largest and most powerful Son Doong Cave in Phong Nha-Ke Bang National Park, Vietnam, inspired me to create a biotope for Macropodus opercularis, which inhabits this area.

The creek is characterized by numerous roots of emersed and floating vegetation that provide safe hiding spots for Macropodus opercularis and its fry. A small stream flows over a sandy bottom scattered with small stones nestled between larger rocks. The substrate contains many dry leaves and dried fruits, contributing organic compounds such as tannins and humic substances. Delicate lighting, sufficient for the local plants, helps recreate the unique atmosphere of this habitat.

Submitted by
Abhineet Prakash Anand
Approved by
Heiko Blessin, Heok Hee Ng & Greg Martin
GPS
17.5629787, 106.3016586
Geographical region
Southeastern Asia
Drainage Basin
South China Sea
River catchment
Gianh River
Water body type
Creek
Water body name
Unnamed stream
Water body part
Marsh land
Water body course
Lower course
Water body: tributary of
Creek
Tributary name
Son river

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Water Chemistry

Water information

Water type
fresh-water
Water color
Clear water
Water transparency
High
Concentration of sediments
High
Water temperature
26 °C
Water flow/curent
Slow

Chemical parameters

pH
7
Conductivity
200
GH
196 mg/l
dGH
KH
8 mg/l
dKH
Dissolved Oxygen
60 %

Substrate in nature

Sand
Beige
Pebble/Gravel
Grey
Stone
Grey
Stone form
Irregular
Silt/Mud
Beige
Leaves
Many
Driftwood
Few
Submerged terrestrial vegetation
Yes

Aquatic Biotope

Date of collecting
3 June, /2024
Collecting area
Small bay
Water depth
1,0m
Air temperature
28 °C
Sunlight
Filtered/dappled sun

Environment

Environment
Untouched
Surrounding area

The creek is surrounded by dense vegetation, including trees, tall grasses, and a variety of plant species. Leaves and dry branches often fall into the water or remain partially submerged, creating a beautiful above-water landscape. A dense growth of water lilies is found in abundance, along with a few other floating plants that provide excellent hiding spots for the fish and their fry.

Underwater landscape

The watercourse in the area contains a large amount of both submerged and emersed vegetation. The underwater landscape features numerous water lilies, some moss, and organic debris that has accumulated on the roots of floating plants and along the bottom.

This material supports a thriving community of microorganisms, which in turn provide a food source for fish fry in a natural symbiotic relationship. The substrate is also populated with a variety of aquatic plants. Along the shoreline, fallen leaves and broken tree branches create a striking and natural underwater scene.

Threats to ecology

Riparian zone

Trees near the aquatic habitat
Many -