#10961 Flooded Canal Margin, Chao Phraya Basin, Ayutthaya, Thailand

Aquarium information

Aquarium description

Set-up date

March, 2026

Aquarium decoration

The aquarium is designed to replicate a natural floodplain edge, with a gradual slope extending from a raised embankment to a shallow open sand foreground. The rear and side sections are elevated using aquasoil contained in mesh bags, covered with organic potting substrate, and capped with a layer of fine sand to reproduce natural sediment stratification.

The use of an organic substrate layer beneath the sand cap provides a nutrient-rich foundation that supports vigorous plant growth while maintaining the appearance of a natural sediment profile.

Planting is intentionally irregular and limited to reflect natural colonization patterns rather than a densely planted aquascape. Limnophila aromatica is arranged in loose clusters, Hygrophila polysperma grows in denser groups, while Oenanthe javanica is positioned along the embankment to create emergent growth and vertical structure. The floating plant Salvinia cucullata is used selectively to create shaded surface areas.

The aquarium contains only Trichopsis pumila to maintain ecological focus and avoid an artificial community composition. A group of six individuals was selected, allowing natural behaviors such as surface interaction, territorial spacing, and the use of vegetation as shelter to be observed.

Fish:

• Trichopsis pumila (Osphronemidae) -6

Aquatic plant:

• Limnophila aromatica
• Hygrophila polysperma
• Oenanthe javanica
• Salvinia cucullata

Aquarium equipment

Filtration:
Hang-on-back filter with reduced flow to simulate the slow-moving conditions of a floodplain margin habitat.

Heating:
Submersible heater maintaining a stable tropical temperature.

Lighting:
ASTA 20 LED lighting with moderate intensity, positioned to create uneven illumination and natural areas of shade.

Equipment was removed during photography to preserve the visual authenticity of the biotope representation.

Fish care

Fish are fed a varied diet including small frozen brine shrimp and high-quality prepared foods to support natural feeding behavior and maintain good condition. Observations show active surface interaction, exploration, and natural territorial behavior within the planted areas. Stress is minimized through gentle water movement, surface cover provided by floating vegetation, and stable water parameters.

Plant care

Plants are maintained with minimal intervention to preserve a natural appearance. Trimming is kept to a minimum and carried out selectively, with entire stems removed rather than shaping plant growth. The emergent growth of Oenanthe javanica is encouraged to enhance the realism of the floodplain habitat.

Water care

A 20–35% water change is performed weekly to maintain stable water quality. The dense plant growth contributes significantly to nutrient uptake and helps keep the water clear, making it possible to rely mainly on evaporation top-offs if necessary. However, regular weekly maintenance is continued to monitor the aquarium and maintain a close interaction with the ecosystem.

Dimensions

Length

60 cm

Depth

36 cm

High

18 cm

Volume

38.6 L