bam Demanding level

Jungmuncheon Stream, Jeju-do, South Korea

Sponsored by
Educated by Nature

South Korea, Self-governing province of Jeju-Do, Jeju Special Autonomous Province

This 98L aquarium is based on the hillstream of Jungmuncheon, which is a riverstream flowing through the beautiful landscape of the Island of Jeju-Do, South Korea.

This habitat is a rather classic hillstream, with fast running water, and no aquatic vegetation. I chose to replicate this beautiful habitat because I was fascinated by the stoney look and the interesting behavior of Rhinogobius giurinus, which inhabits the place. I wanted to recreate a fast flowing habitat for a while, and this seemed to fit perfect into my newly gained obsession with Rhinogobius.

Submitted by
David Nørholm
Approved by
Fan Li & Zhou Hang
GPS
33.2456169, 126.4186172
Geographical region
Eastern Asia
Drainage Basin
Jungmuncheon River
River catchment
Jungmuncheon Stream
Water body type
Stream
Water body name
Jungmuncheon Stream
Water body part
Rapids
Water body course
Middle course
Water body: tributary of
River
Tributary name
Jungmuncheon River

Videos above and below water


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Water Chemistry

Water information

Water type
fresh-water
Water color
Clear water
Water transparency
High
Concentration of sediments
Low
Water temperature
21 °C
Water flow/curent
Strong

Chemical parameters

pH
7.5
Conductivity
GH
13 mg/l
dGH
KH
dKH
Dissolved Oxygen

Aquarium information

Aquarium description

Set-up date
October, 2022
Aquarium decoration

This setup is based on a mix of stones in all sizes, shapes and colors like in the natural habitat. There are some very large rocks in both sides, and these steeps down towards the center of the tank. Smaller sized rocks, pebbles and gravel are used to fill out gaps and front for a more natural look. I have chosen to place a couple of very small sticks, to imitate fallen wood that has been trapped by stones in the stream.

Although the pictures dosen’t really show, the flow is strong in the tank. To mimic the movement of the stream I have chosen to let the streamer flow under the waterline – since it is current I wanted to create, and not waves.

On the left I have chosen to have a couple of ferns, which is meant to imitate the vegetation that grows right down to the stream.

There are several small caves between the rocks to help create hiding places for vulnerable fish.

Aquarium equipment

Lighting: Twinstar 90B
Filtration: Fluval 207
OASE Streammax Classic 4000

Fish care

The aquarium recreates the habitat for Rhinogobius giurinus, which is the dominant species in the stream. The flat rock surfaces are great places for this fish to dwell between its jump from rock to rock. Often it only stays on a certain spot for less than a minute, before jumping of for the next one. Therefore a lot of rocks are needed. Some of them with broken line of sight to help quell aggressions.

My Rhinogobius only accept live foods, which is why they are fed with a mix of bloodworms, artemia and other small insects.

Plant care

No plants are found in the habitat.

Water care

30-40% of water is changed weekly. Because of the high amount of live food in the aquarium, a relatively high level of water change is needed.

Dimensions

Length
80 cm
Depth
35 cm
High
35 cm
Volume
98 L

Substrate in aquarium

Sand
Beige
Pebble/Gravel
Mixed
Stone
Mixed
Stone form
Roundish
Silt/Mud
Beige
Leaves
Driftwood
Few
Submerged terrestrial vegetation

Bibliography

Comment by the expert

Fan Li: This biotope looks healthy. Gobies were good condition.

Zhou Hang: –