Taste of hometown the Nak-Dong River, Korea, 500L

_st place in Biotope Aquarium Design Contest 2022

Volume of aquarium: 500 liter

Dimensions of aquarium: 120x60x60 cm + under sump filter

List of fishes: Tanakia latimarginata, Squalidus gracilis majimae, Microphysogobio yaluensis, Acheilognathus yamatsutae, Palaemon paucidens De Haan

List of plants: Vallisneria natas H. Hara.

Description of Decorations and Substrate: driftwood, small rocks, gravels found and take from the nature biotope.

Description of Equipment: lower sump filter, 2 small flow pump, Full RGB Led lights 120W, Kessil 360X, Hydra 260 led lights

Water Parameters: Temperature is 24°C, pH is 6.5

Additional Info: 10 hours(10 AM to 8 PM) of lights daily, feeding every two days with 5 different foods, change 30% of the aquarium every month, no heater, no cooling system

Aquarium video:

Description of the Area Surrounding the Biotope: Nak-Dong River is one of the longest rivers in S.Korea. It’s about 510km long. There are a variety of fishes and also their own species such as Tanakia latimarginata. This river comes from the mountain (more than 5,000 tons of water comes out everyday) and flows through the central south part of S.Korea and flows to the Southern Sea.

Description of the Underwater Landscape of the Biotope: it has variety types of stones and driftwoods and some plants. some section developed by fine sand with whitish color.
River passes through a huge city, and dense forest in some section.

Description of the Habitat Parameters: The average temperature is 18°C, but in the summer 27°C. In winter 5°C. pH varies from 7.5 ~ 8.5 depending on the season and section.

List of Fishes and Invertebrates Occurring in the Nature Biotope: Tanakia latimarginata, Squalidus gracilis majimae, Microphysogobio yaluensis, Acheilognathus yamatsutae, Palaemon paucidens De Haan, Nipponocypris temminckii, Moroco oxycephalus, Coreoleuciscus splendidus, Pseudogobio esocinus,

List of Plants Found in the Nature Biotope: Hydrilla verticillata, Vallisneria natans (Lour.) H.Hara. Hydrocleys nymphoides, Ceratophyllum demersum, Potamogeton crispus,  Eleocharis acicularis for. longiseta, Najas marina

Threats to the Ecology of the Biotope: The river is being polluted by nearby urban areas and some industrial areas.

Sources of Information:
1. file:///Users/apple/Downloads/07-%EC%B1%84%EB%B3%91%EC%88%98-%EB%82%99%EB%8F%99%EA%B0%95(hj)(%EC%BB%AC%EB%9F%AC).pdf
2. https://en.dict.naver.com/#/entry/koen/5b0e134f62454cacbb0fd8af67290042
3. file:///Users/apple/Downloads/08-%EB%82%99%EB%8F%99%EA%B0%95(hj).pdf
4. https://kosis.kr/statHtml/statHtml.do?orgId=202&tblId=DT_1211
5. https://www.koreascience.or.kr/article/JAKO200118317177649.pdf