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Small forest stream, Lower Huallaga river, Peru

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Peru, Loreto, Yurimaguas

The Huallaga River is a tributary of the Marañón River, part of the Amazon Basin. Old names for this river include Guallaga and Rio de los Motilones. The Huallaga is born on the slopes of the Andes in central Peru and joins the Marañón before the latter reaches the Ucayali River to form the Amazon. Its main affluents are the Monzón, Mayo, Biabo, Abiseo and Tocache rivers. Coca is grown in most of those valleys, which are also exposed to periodic floods.

Submitted by
Arif Hikmet Başeğmez
Approved by
Heiko Blessin & Nathan K. Lujan
GPS
-5.9054799, -76.3217621
Geographical region
South America
Drainage Basin
Ucayali river
River catchment
Huallaga river
Water body type
Puddle
Water body name
Floodplain Small Forest stream
Water body part
Marsh land
Water body course
Lower course
Water body: tributary of
Hill streams
Tributary name
Huallaga river

Videos above and below water

Water Chemistry

Water information

Water type
Fresh water
Water color
Mixed water
Water transparency
Medium
Concentration of sediments
Medium
Water temperature
25 °C
Water flow/curent
Slow

Chemical parameters

pH
6.8
Conductivity
120
GH
3 mg/l
KH
2 mg/l
Dissolved Oxygen

Aquarium information

Aquarium description

Set-up date
September 2019
Aquarium decoration

Roots and branches placed to represent the forest flood, white fine sand similar to the habitat in the lower ground, small pieces of branches and abundant leaves were used. The materials are similar to the habitat.

Aquarium equipment
  • External filter Sunsun hbl 802
  • 100 watt heater
  • Mygos plant series 35 watt 7500k LED-light
Fish care

15% of routine water changes and maintenance are done weekly. Nitrate values are kept very low. Plants also contribute a lot to the nitrogen cycle.

FIshes:

Plants:

 

Plant care

15% of routine water changes and maintenance are done weekly. Nitrate values are kept very low. Plants also contribute a lot to the nitrogen cycle.

Water care

15% of routine water changes and maintenance are done weekly. Nitrate values are kept very low. Plants also contribute a lot to the nitrogen cycle.

Dimensions

Length
60 cm
Depth
40 cm
High
40 cm
Volume
96 L

Substrate in aquarium

Sand
White
Pebble/Gravel
Stone
Stone form
Silt/Mud
Leaves
Many
Driftwood
Many
Submerged terrestrial vegetation
no

Bibliography


Sitography

→ Wikipedia – Huallaga River
→ Drug Control: U.S. Antidrug Efforts in Peru's Upper Huallaga Valley

Comment by the expert

Heiko Blessin: Aquarium looks natural, but it’s not an eye catcher.

Nathan K. Lujan: The Paracheirodon stand out as being inappropriate for this project – they are from Amazon basin streams east of the Andean piedmont where Apistogramma baenschi is found. I really liked the algae/silt/aufwuchs of the, which looked very natural, but the set-up needed a few more cobble-size stones, which are highly characteristic of Andean piedmont streams. I appreciated that the Apistogramma were spawning and the young were kept in the tank. Various catfishes including Otocinclus and Corydoras are also common throughout this region and would make a nice addition.