bam Beginner-friendly level

Rio Cautário, Rio Guaporé affluent, Madeira, Brazil

Sponsored by

Brazil, Rondônia, Conceição - Príncipe da Beira, Costa Marques

This 720L biotope model consists of emerse and submerse portion. The volume of aquatic portion varies from 493L in wintertime to 370L in summertime.

It represents a meander in Rio Cautário in dry season, tributary of Guapore river in Western Brazil. The Cautário River rises in the Uru-Eu-Wau-Wau Indigenous Territory. It is fed by streams from the 650m (2.130 ft) Serra Uopianes and the 750m (2.460 ft) Serra Pacaas Novos.

The Rio Cautário has clear waters fed by a region without major deforestation and silting of the river’s margins. It has rapids, but always with a drop of less than 2m (6.7ft). The simplicity of Gymnocorymbus ternetzi and Prionobrama filigera and a less known river inspired me to create a simple yet astonishing natural habitat to bring in light the Cautário River.

Submitted by
Abhineet Prakash Anand
Approved by
Roberto E. Reis & Pablo C. Lehmann
GPS
-12.2068195, -64.5939102
Geographical region
South America
Drainage Basin
Rio Amazonas
River catchment
Rio Madeira
Water body type
River
Water body name
Cautario
Water body part
Meander
Water body course
Lower course
Water body: tributary of
Rio
Tributary name
Guaporé

Videos above and below water


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Water Chemistry

Water information

Water type
fresh-water
Water color
Clear water
Water transparency
Medium
Concentration of sediments
Low
Water temperature
15-33 °C
Water flow/curent
Slow

Chemical parameters

pH
6.5
Conductivity
50
GH
17.8 mg/l
dGH
KH
1 mg/l
dKH
Dissolved Oxygen

Aquarium information

Aquarium description

Set-up date
August, 2020
Aquarium decoration

Stones of a color similar to those found in the biotope and river sand personally collected from wild. Large and smaller roots collected from wild to mimic the natural environment of Cautario river in dry season.

The effect of a naturally sandy bottom at dry season is created with the similar looking sand of Kaveri river found in India and this effect was created over time. All elements of the aquarium decor have been properly cleaned and heat treated to keep the fish safe.

The set-up is to imitate a natural looking environment which resembles the biotope in a simple and beautiful manner. A meander is shown with two sides (right to left) to show the curve and flow of stream. above it resembles the terrestrial area surrounded with vegetation to mimic the natural environment above and below the water.

The roots mimics a tree root that grow at the edge of meander and diy light is used to show the depth of meander curve of the river. The biotope is created with both dark and shadowy portion and bright portion to resemble the natural light for comfortable environment of the species.

I avoided use of aquatic plants to show the dry and hot season of the River Cautario. Biotope is almost 4 years old and the species were introduced 2 years back.

Aquarium equipment

Sump filtration with a flow rate of 1800L/h containing mechanical filtration and biological filtration (red brown pumice and lawa chips). DIY lights.

Fish care

The setup recreates the ideal environment for Gymnocorymbus ternetzi and Prionobrama filigera. Fish have many hiding places with open area as well to balance the natural environment with diy lights and tree roots with same colour rocks found in Cautario river.

In summers I keep the water level to 45cm with a volume of 370L to mimic the dry season and rest I keep the level at 60cm with a volume of 490L. I try to balance the natural environment as much as possible. I feed my fishes with variety of DIY and commercial foods for their optimal health.

Plant care

The terrestrial plants grows on the waste of fish dissolved in water (based on hydroponics) and occasional micro nutrient dosing is supplied for optimal growth.

Water care

As the setup holds a large amount of water volume as compared to living stock and it supports a sump filtration and hydroponics system, I change water every 30 days (60%) with a glass cleaning every week. A mix of supply water and RO water is used to balance the water chemistry.

Dimensions

Length
137 cm
Depth
60 cm
High
90 cm
Volume
717 L

Substrate in aquarium

Sand
Beige
Pebble/Gravel
Beige
Stone
Mixed
Stone form
Irregular
Silt/Mud
Beige
Leaves
Few
Driftwood
Many
Submerged terrestrial vegetation
None