A suitable fish tank is one which contains enough space for a fish to move around freely. Contrary to popular perceptions spherical bowls are not good housing for either goldfish or tropical fish unless they are very large. The best sort of fish tank will be rectangular and made of sturdy glass, preferably with a roof to prevent fish from jumping out. Some fish tanks come ready equipped with a back light and this is a good thing if one is thinking of purchasing tropical fish; however cold water fish do not require a back light.
A properly equipped fish tank should come with a filter and an aerator to maintain suitable levels of oxygen in the tank. If you will be keeping tropical fish you should think about including a heater as well; however cold water fish will not need a heater in their fish tank.
It is important to include gravel in a fish tank for the health and well being of both tropical and cold water goldfish. Contrary to popular opinion, fish have a longer attention span than seven seconds and hence it is advisable to include toys and ornaments to divert their attention. Toys need not be expensive; fish can be diverted by something as cheap and ordinary as a ping pong ball inserted into their tank.
To keep both cold water and tropical fish healthy it is a good idea to put food into the fish tank on a daily basis. Different kinds of fish require different kinds of food and your pet shop should be able to advise you on this. It is very important not to over-feed fish as to do so can result in illness and even death. Fish will over-eat if given the opportunity so be very careful as to how much food is inserted into the fish tank.
And after you've purchased one for your home, take a look at the VideoJug website to find out how to set the Fish Tank up.