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#9305 Floodplain, Rio Paraconi, Brazil

Brazil, Amazonas

The Paraconi River is a tributary of the middle Amazon River, and it is also the origin of Paraconi tetras. They prefer to gather under water lilies or in underwater woods to hide from predators. I have set up their favorite environment in the aquarium to give them enough security. My efforts have paid off – they love the environment I created for them and trust me very much. Now I can even touch them with my hands.

Submitted by: XianYu Chen
Approved by: Roberto E. Reis, Pablo C. Lehmann & Antonio Machado-Allison

Geographical region: South America
Drainage Basin
River catchment: Paraconi River
Water body type: River
Water body name: Floodplain
Water body part: Mangrove
Water body course: Middle course
Water body: tributary of: River
Tributary name: Paraconi River

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Water Chemistry

Water information

Water type: fresh-water
Water color: Clear water
Water transparency: High
Concentration of sediments: Medium
Water temperature: 28 °C
Water flow/curent: Slow

Chemical parameters

pH: 6.5
Conductivity: 50
GH: 10 mg/l
dGH
KH
dKH
Dissolved Oxygen

Substrate in nature

Sand: Beige
Pebble/Gravel: Beige
Stone: Brown
Stone form
Silt/Mud
Leaves: None
Driftwood: Few
Submerged terrestrial vegetation: Yes

Aquatic Biotope

Date of collecting: 10/01/2025
Collecting area: Flooded area
Water depth: 1,0m
Air temperature: 30 °C
Sunlight: Full sun

Environment

Surrounding area

On the banks of the Paraconi River, dense mangrove roots twist and intertwine, stretching horizontally through the clear river water. Canopies tower overhead, casting dappled light onto the water’s surface. Water lilies unfurl their leaves, forming a natural barrier with the tangled tree roots beneath the water. This is the habitat of Paraconi discus fish. They dart among the roots, their vibrant bodies shimmering in the play of light and shadow, leisurely evading predators and thriving in the shelter of this unique ecosystem.

Underwater landscape

Fis list:

Symphysodon (Cichlidae)
Corydoras (Callichthyidae)
Hyphessobrycon (Characidae)

Aquatic plant list:

Nymphaeaceae (Nymphaea)
Microsorum (Polypodiaceae)

Threats to ecology

Comment by the expert

Roberto E. Reis: Quite poor description of environment and little photographic support. Threats not described. A small number of fish species and plants listed. No references and websites listed. BAM missing.

Pablo C. Lehmann: This BIN entry paints a convincing picture of the Rio Paraconi floodplain but remains incomplete as a scientific biotope description due to the lack of visual support, references, and broader biodiversity coverage. It would benefit significantly from stronger documentation and ecological context.