West and central
Africa are full of rivers. There are many rivers that we have all heard of like the
River Niger,
River Gamba, and of course the
River Congo (this was formerly known as the
river Zaire.
The
River Congo is the largest
river in Western Central
Africa reaching a length of 2,922 miles. There is only the Nile that is larger than this in
Africa. It flows through the second largest area of rain forest in the world; the largest being the Amazonian rain forest. Its source is the highlands of the East African Rift and from the great lakes like
Tanganyika.
As with most of the African rivers, the
water current varies from region to region providing different habitats for various species of
fish. The
pH of the
water ranges from 6.9 up to 7.2 so a
biotope with a neutral
pH (7.0) should be ideal.
Water hardness should be soft to medium (3-8DH) and the
temperature needs to be set between 24-27 deg C.
Setting up the tank
Tank sizes of 100 liters (22 gallons) are ideal; but always go for the largest you can afford. Fine
gravel or sand should be used for the
substrate and provide plenty of hiding places with
wood. Strong
lighting is not required for this
tank, if possible add some floating
plants to provide shady areas.
Water movement can be provided with the
filtration but this needs to be a gentle flow.
Plants for the tank
African
water fern should be used for the
background, this needs to be attached to the
wood, do not place the roots in the
substrate. For the middle ground Anubias can be attached to the
wood in the
tank, as with the
water fern do not place the roots in the
substrate.
Dotted around the back ground add a few Vallisneria, I tend to prefer the Spiralis Vallisneria as it creates more of a feature but the species choice is yours. Eleocharis (hair grass) looks great at the front of the
tank as long as it is not over
planted; keep some open areas for the natural look.
Suggested stocking
There are quite large ranges of
fish to choose from which will feel at home in this
biotope quite easily. African
tetras should be the first consideration. These include the red eye characins and the Congo
tetras.
African glass
catfish make for good middle swimmers and Mochocidae; these are known commonly as naked
catfish. One example of these is the upside down
catfish so named from its peculiar swimming habits. Butterfly cichlids and dwarf
jewel cichlids make good specimen
fish or if you want to add some cichlids that will stand out, try the Zebra Haplochromis.
Sources of information:-
mongabay.com,
wikipediaWest or Central African River
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