Keeping an aquarium is an interesting hobby but maintaining it is another story. . There are so many issues that one needs to keep in mind and the most important of all is fish compatibility.
I have had bad experiences when fish did not get along. As you know sky is the limit when it comes to fish selection and it is not always that we know which fish is friendly with which fish.
The guppies are the best solution. They come in a multitude of colours adding beauty to an aquarium. They breed fast and in fact you will not know what to do with so many unless you have another aquarium.
Try this out and you will be a one happy aquarium owner.
Do you have an aquarium?