Headwaters wetland, Pigeon River, Ontario, Canada

Aquarium information

Aquarium description

Set-up date

May, 2025

Aquarium decoration

The aquarium’s composition is carefully designed to replicate the littoral zone of a cold, spring-fed wetland found at the headwaters of the Pigeon River. The substrate consists of a natural-colored mix of fine sand, silt, and leaf litter to mimic the soft, organic bottom observed during fieldwork. The hardscape includes scattered, waterlogged reed stems—recreated using trimmed, sterilized stalks of Phragmites australis – to reflect the fallen vegetation commonly seen in the natural site.

A gentle, left-to-right water flow is created using a low-output filter positioned at the left rear corner, simulating the natural movement of water across a shallow wetland channel. Submerged Ludwigia palustris provides authentic plant structure and visual continuity with the natural habitat. The layout is kept open and lightly structured, allowing schooling and browsing behavior by Brassy Minnows, Northern Redbelly Dace, and Central Mudminnows, while Marsh Pondsnails graze across organic debris.

Aquarium equipment

• Filtration: Fluval 207 with stainless steel in flow and out flow. 60% close of the lever on the filter allows a slow but steady flow that mimics the natural spring fed water.
• Lighting: Chihiros WRGB2 60cm allowing underwater growth and above water grow of plants.

Fish list:

• Umbra limi (Umbridae)
• Chrosomus eos (Leuciscidae)
• Hybognathus hankinsoni (Leuciscidae)

Mollusc list:

• Ladislavella elodes (Lymnaeidae)

Aquatic plant list:

• Ludwigia palustris (Onagraceae)

Wetland plant list:

• Carex lacustris (Cyperaceae)

 

Fish care

To ensure the health and activity of the fish, I selected peaceful, cold-water species that naturally coexist in the same wetland biotope, minimizing aggression and stress. Their habitat is enriched with fine organic debris, branches, and submerged reed stems and leaves, closely resembling their native environment and encouraging natural foraging and schooling behaviors.

Water temperature is maintained at a stable 20-22°C, replicating the cool conditions of spring-fed wetlands.

A varied diet of crushed flakes and bloodworms is provided to meet their nutritional needs, promoting proper growth, color, and energy levels.

Plant care

To support healthy plant growth, I selected native aquatic and emergent species such as Ludwigia palustris and Carex lacustris, which are well-adapted to the cool, shallow water conditions of the biotope. The aquarium receives moderate full-spectrum lighting for 8–9 hours at 25w settting daily to support photosynthesis without promoting excessive algae growth.

The substrate is nutrient-rich, mimicking natural wetland soils with a mix of fine sand, silt, and organic matter to anchor roots and supply minerals. Water temperature is maintained at 20-22 °C, consistent with the plants’ natural habitat.

Water care

During the initial acclimation phase, I perform 60% water changes every three days for the first week, followed by weekly 50% changes to maintain optimal water quality. Water parameters are regularly tested to ensure a safe environment.

Dimensions

Length

90 cm

Depth

40 cm

High

25 cm

Volume

84 L