Dambri Stream, Lam Vien Plateau, Lam Dong, Vietnam

Aquarium information

Aquarium description

Set-up date

March, 2025

Aquarium decoration

The rocks and gravel were collected from the natural habitat and arranged to form two distinct zones: the streambank and the underwater section. In the shallow area, Chrysopogon zizanioides and Axonopus compressus were planted, both sourced from moist, sloped soil along the real streambank.

The underwater section was designed to look as natural as possible, starting with a base layer of basaltic soil, topped with rounded gravel and eroded stones, mixed with decomposed eucalyptus leaf litter to enrich the substrate. Cryptocoryne retrospiralis was planted following the direction of the stream’s flow, adding a sense of movement and realism.

Dry tree roots were positioned as a natural connection between the emersed and submerged zones, creating a seamless and wild transition. After one month, mosses were allowed to establish under carefully controlled lighting, giving the tank a wild, untouched look that reflects the true spirit of the habitat.

Aquarium equipment

Canister filter with an 8-liter media capacity and a 1500 L/h pump
Xima 40W LED light
Xima 5W spotlight
12V cooling fan

Fish care

The aquarium replicates the Dambri stream environment, creating an ideal habitat for Rhinogobius duospilus and Micronemacheilus cruciatus, with plenty of hiding spots and a thick substrate for the fish to burrow into. The environment is enriched with Cryptocoryne retrospiralis, which sends its roots deep into the rocky substrate.

A strong water flow ensures a high level of dissolved oxygen. The temperature is maintained between 24–26°C. After one month, a stable population of decomposer microorganisms (nitrifying bacteria, anaerobic bacteria, and cellulose-degrading bacteria) begins to establish.

Decaying leaves release tannins, which gently lower the pH and release organic compounds beneficial for both microorganisms and native fish. Aquatic plant roots assist with gas exchange and absorption of excess waste compounds (NH₄⁺, NO₃⁻).

Fish list:

• Macrognathus circumcinctus (Mastacembelidae)
• Rhinogobius duospilus (Gobiidae)
• Danio albolineatus (Cyprinidae)

Mollusc list:

• Physidae acuta (Physidae)

Plant care

The plants grown in the emersed (dry) section include Axonopus compressus and Chrysopogon zizanioides. These plants are rooted in a layer of red basaltic soil, where their root systems absorb nutrients. In nature, their roots also help stabilize the soil and prevent erosion or landslides. They require no special care.

The lighting is designed to mimic natural sunlight, promoting photosynthesis and healthy growth. Cryptocoryne retrospiralis, planted underwater, along with the extended roots from the emersed section, helps absorb NO₃⁻ and NH₄⁺, contributing to natural water filtration.

Aquatic plants:

• Cryptocoryne retrospiralis (Araceae)

Wetland plants:

• Chrysopogon zizanioides (Poaceae)
• Axonopus compressus (Poaceae)

Water care

The aquarium is topped up with water every two weeks. The high-flow filter is cleaned every three months, and beneficial bacteria are added after each cleaning to maintain a healthy microbial balance.

Dimensions

Length

70 cm

Depth

40 cm

High

20 cm

Volume

56 L