Kahang Stream at Johor district, Peninsula Malaysia

_ place in Biotope Aquarium Design Contest 2019

Volume: 34 L
Dimensions: 60x28x18 cm
List of fishes: Betta Pugnax, Pagio shelfordii, Mastacambelus Favus, Brachygobius xanthomelas & Brevibora dorsiocellata
List of plants: Cryptocoryne Nurii and Eleocharis sp.
Description of decorations: I am using cryotocoryne plant, driftwood and sand as core of my biotope. Those sand sadly mix with clay and gave brownish color affected by logging activity from up stream. Dead leaf and rock as my detailing aspect for my biotope.
Description of equipment: EHEIM classic 150, DIY lighting (1 bulb 10W, 800lm).
Water parameters: 28°C,TDS is 100ppm pH is 7 and kH 1
Additional info: water change perform every 2 weeks

INFORMATION ABOUT BIOTOPE

Description of the area surrounding the biotope: Kahang river is located at upper part of Johor between Endau Rompin National Park and Berlumut mountain Forest Recreational Forest 8meter from sea level. Its flows from Berlumut mountain to Endau river before reaching sea at 140km. Kahang river is one of the important source of water for people living nearby which is people used for rice field and oil palm plantation.

Description of the underwater landscape of the biotope: Freshwater from mountain flow thru sand and stone reaching river in crystal clear condition before travel along the main river. Driftwood, brunches and dead leaf was carried river flow and stop when it stuck to the crytocoryne plant and rock. Fauna take those stuck wood and brunches as their shelter and hiding from predator.

Description of the parameters of the habitat: Water is clear and sometimes cloudy due to erosion at the hill. Habitats is neutral between pH 6.5-7.5.The temperature range between 22°C to 28°C.

List of fishes and invertebrates occurring in the nature biotope: Betta Pugnax, Pagio shelfordii, Pangio Semichinta, Pangio Malayana,Caridina Malayan, Caridina Malayensis, Crossocheilus langei, Sundasalanx sp., Mastacambelus Favus, Brachygobius xanthomelas, & Brevibora dorsiocellata.

List of plants found in the nature biotope: Cryptocoryne Nurii and Eleocharis sp.

Threats to the ecology: The aquarium was set up to attract public attention especially Malaysian to the problem of contruction of Kahang dam that can be treat the flora and fauna habitat along Kahang River especially smaller stream. The natural flow of biotope dry and wet season will totally change follow the Dam schedule. Some of fauna will travel from upstream to downstream for breeding also will be affected. This could treat some of flora and fauna to be extinct.

Sources of information: Mohd Shalahuddin Adnan1,*, Muhammad Nda1,2, Mohd Shazrin Zakaria1
,Mohamad Arif Suhadak1, Mohd Adib Mohammad Razi1, Mohd Azlan Mohd
Yusoff1, Siti Nazahiyah Rahmat1, Muhammad Salleh Abustan1, Saiful Azhar
Ahmad Tajudin, Bedload Sediment Concentration of Sungai Kahang
Downstream Kahang Dam in Johor, International Journal of Integrated Engineering,Special Issue 2018: Civil &
Environmental Engineering, Vol. 10 No. 2 (2018) p. 146-150

Comments of the members of the jury of Biotope Aquarium Design Contest 2019