New Guinea is located north of the Australian continent and is the world’s second largest island. At one time it was joined to the Australian main land but separated when the area known as the Torres Strait was flooded over during the last glacial period. This is why the
fish species that are found in New Guinea resemble those from Australia more so than the
fish species from Southeast Asia.
The western side of the island contains the provinces of Papua and West Papua, the eastern side is the independent country of Papua New Guinea.
The main species of
fish to be exported from this island is the Rainbow
fish, this species is also divided into several sub species.
The
water conditions are very easy to replicate being in the middle regions of
hardness (4 – 8 DH) with the
pH from 6.5 – 7.1.
Water temperatures are on the lower side of tropical 23 – 25 deg C.
Setting up the tank
A minimum
tank size of 200 liters (44 gallons) is recommended for this
biotope as rainbow
fish do require a lot of swimming space; a lid is also a must as these
fish are well known to be jumpers.
Keep the planting to the rear of the
tank and use sand as the
substrate. Adding
river rocks on top of the sand works well, bright
lighting is also a must.
Plants for the tank
Vallisneria used as a back ground
plant will give a good banking effect, mix in with some Aponogeton for a varied back drop. Ceratopteris (Indian fern) can either be used as a floating
plant or mid ground planting, mix this with some Bolbitis (African
Water Fern) but keep the front of the
tank unplanted to provide the free swimming area
Fish for the tank
As mentioned earlier in the
article, this is the perfect
biotope for rainbow
fish. There are several species but the most common available has to be the Bedotia. Adult size for these
fish is 6 inches so a
tank of at least 48 inches in length will be required. These are a schooling
fish, a group of at least 4
fish will keep them happy.
Freshwater gobies, in particular the pygmy goby, will add some interest to your
tank. Always make sure that the species of goby you are purchasing is suitable for a freshwater set up, many species are happiest in brackish or even
saltwater conditions.
Arius
catfish, commonly known as the shark
catfish are always on the move. I have kept several of these in the past and they are a very tolerant species but they can grow up to 15 inches in captivity, be aware of this when adding them to your
aquarium. This species of
fish also prefers to be kept in groups of at least 4
fish.
All of the above mentioned species will feel more at home with the addition of some salts to the
water but add this in a mild dose.
Sources of information
Rhett A. Butler/mongabay.com,
wikipediaNew Guinea River
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