Εγώ πάντως θα το έκανα δισκοενυδρείο, βεβαια γίνεται και βιοτοπικό Malawi!
(sorry αλλά δεν μπορούσα να αντισταθώ 
απο το απόγευμα το γράφω και το σβήνω )
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Βασικά και το ενυδρείο vivarium είναι,
Παραθέτω απο wikipedia,
Flora and Fauna There are various forms of vivarium, including:
- Aquarium, simulating a water habitat; for instance a river, lake or sea; but only the submerged area of these natural habitats. Plants in the water will use some nitrogen present within the system, and will provide areas for organisms to hide and forage.
- Insectarium, containing insects and arachnids.
- Paludarium, simulating a rain forest or swamp environment. It also can be seen as an aquarium interconnected with a terrarium, having both the underwater area as well as the shore.
- Riparium, a paludarium with circulating current through different-leveled pools
- Terrarium, simulating a dry habitat, for instance desert or savannah. A terrarium can also be formed to create a temperate woodland habitat, and even a jungle like habitat. This can be created with pebbles, leaf litter, and soil. By misting the terrarium, a natural water cycle occurs within the environment by condensation forming on the lid causing precipitation. Plants suitable for this type of terrarium environment include moss and tree seedlings. Many kinds of plants are suitable for these habitats, including bromeliads, African Violets and Crassulaceae. Animals commonly held for observation include reptiles, amphibians, insects, spiders, scorpions, and small birds.