Unnamed slugish stream in Bulungan forest , Indonesia

_th place in Biotope Aquarium Design Contest 2020

Volume: 100L
Dimensions: 100x45x25cm
List of fishes: Betta Antuta
List of plants: None
Description of decorations: The substrate is made of sand and gravel mix with a bit of sediment. There is alot of leaves , some twigs and branches. All the big stones are natural . I have tried to chose materials that resemble the one in the habittat as much as possible
Description of equipment: Lights : A mix of flood lights . 3x10w + 20w, Filtration : External filter Hw-302
Water parameters: 21-25C, Ph-6-6.5, Kh -3, GH-3


Description of the area surrounding the biotope: Bulungan regency is the northern part of the province of East Kalimantan, Indonesia. The dense mountain tropical rainforest hides there a network of rocky streams , the stream i have chosen to present is calm except during the rainy season when it may become heavy. The stream meanders through the forest in a rocky bed and little light can penetrate the dense canopy of tropical rainforest trees so its quite dark on the ground level.
Description of the underwater landscape of the biotope: The entire streambed is littered with stones, as the stream flows slowly around the jungle so its bottom is full of leaves, sticks and other botanical debris where Betta Antuta loves to hide.
Description of the parameters of the habitat: Water us ussualy clear but can get hazy depending on the weather. PH stays around 6, the temperature varies from 20-25C due to the habitat being quite high above sea level. Despite the fact that the water flows through stonebed the hardness is pretty low. KH and Gh are 0-3
List of fishes and invertebrates occurring in the nature biotope: Betta Antuta
List of plants found in the nature biotope: None
Threats to the ecology: In the area, logging and mining activities are carried out that may endanger this beautiful habitat
Sources of information:

  1. https://www.youtube.com/watch?v=nSLvcT3RsHs
  2. https://www.youtube.com/watch?v=9DcstOAYgng&lc=UgyRp31_ejEVCRMhRjJ4AaABAg.97s0n1w0scS97s1hBlXnkW
  3. Forest, Resources and People in Bulungan (PDF)
  4. https://www.seriouslyfish.com/species/betta-sp-antutabulungan/

Comments of the members of the jury of Biotope Aquarium Design Contest 2020