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Igarapé do Daracua, Rio Negro, Barcelos, Brazil
Brazil, South America, South America
This time I want to show a small stream of the Rio Negro River – Igarape do Daracua near Barcelos, Brazil.
This place interests me a lot, that’s why I tried to recreate this biotope in the aquarium, so my experience can help other aquarists.
My biotope contains wood, twigs and lots of dry leaves. And for the fish I only used Paracheirodon innesi and Petitella bleheri. There are actually many small fish living there, but as my tank measures only 100x40x40cm, I decided to use two species that live in groups – I don’t want this tank to be overpopulated.
I do not use aquatic plants, because in the original biotope there are none at all, except for the vegetation that grows from the seeds of the surrounding trees.
- Submitted by
- MAA Rafsanjani
- Approved by
- Roberto E. Reis, Pablo C. Lehmann and Flávio Lima
- GPS
- -0.4899390, -63.2024994
- Geographical region
- South America
- Drainage Basin
- Rio Amazonas
- River catchment
- Rio Negro
- Water body type
- Igarapè
- Water body name
- do Daracua
- Water body part
- River mouth
- Water body course
- Lower course
- Water body: tributary of
- Rio
- Tributary name
- Rio Negro
Videos above and below water
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Water Chemistry
Water information
- Water type
- fresh-water
- Water color
- Black water
- Water transparency
- Medium
- Concentration of sediments
- Medium
- Water temperature
- 25-27 °C
- Water flow/curent
- Slow
Chemical parameters
- pH
- 4
- Conductivity
- 8
- GH
- 71 mg/l
- dGH
- KH
- 89 mg/l
- dKH
- Dissolved Oxygen
- 0.0002 %
Substrate in nature
- Sand
- Beige
- Pebble/Gravel
- Beige
- Stone
- Mixed
- Stone form
- Roundish
- Silt/Mud
- Reddish
- Leaves
- Adundant
- Driftwood
- Many
- Submerged terrestrial vegetation
- Yes
Aquatic Biotope
- Date of collecting
- 05/February/2023
- Collecting area
- Backwaters
- Water depth
- 0,2m
- Air temperature
- 24 °C
- Sunlight
- Filtered/dappled sun
Environment
- Environment
- Affected by human activity
- Affected by human activity
- Agriculture
- Agriculture
- Advanced
- Surrounding area
Igarapé do Daracua near Barcelos, central Rio Negro is a municipality named for the village of Daracua in the state of Amazonas, Brazil.
The area around the Rio Negro offers an extraordinary mix of natural beauty, cultural heritage and biodiversity. It is the ideal destination for those seeking an immersive experience in the Amazon rainforest and a deeper understanding of the area’s rich ecosystem and indigenous culture.
- Underwater landscape
This biotope area is known for its dark, almost black water color, which is caused by the concentration of dissolved organic matter. This gave the river its name, Rio Negro, which means “Black River” in Portuguese. Dark waters create a different visual experience underwater, with less visibility compared to clearer rivers.
Igarapé and its underwater landscapes are home to an extraordinary diversity of aquatic biodiversity. The river supports a wide variety of fish species, including iconic species such as Paracheirodon innesi dan Petitella bleheri.
Fishes:
- Paracheirodon innesi (Characidae)
- Petitella bleheri (Characidae)
- Threats to ecology
Industrial activities, agricultural runoff, and human settlements contribute to pollution in the Amazon River. Chemical pollutants, including pesticides and fertilizers, find their way into the water, posing a threat to aquatic ecosystems and the species that inhabit them.
Efforts are being made by governments, conservation organizations, and local communities to address these threats and protect the ecology of the Amazon River.
Conservation initiatives, sustainable land-use practices, stricter enforcement of environmental regulations, and the involvement of local communities in conservation efforts are crucial in mitigating these threats and preserving this unique and important ecosystem.
