Choose Proper Bowl Size for adequate oxygen and light
Every time a first time owner, or one without proper knowledge, thinks of a goldfish, the first image that comes to mind is the usual round, small bowl often seen in cartoons.
This is not surprising as the small size of a gold fish is usually misconstrued for tiny habitats. On the contrary, the goldfish actually requires a bowl of not less than 12 gallons of space! (which is approximately 70 litres).
If you insist on using a small bowl, you only end up creating an unhealthy environment for survival because there will be a high concentration of waste materials such as ammonia and low availability of oxygen which leads to shortened lifespan.
It is also worthy to note that a wide, transparent bowl is more convenient than a long bowl; this is to allow enough atmospheric oxygen diffuse into the water taking advantage of the wide surface area and enough light for optimum metabolism of the fish’s system.
Avoid unnecessary additions
It is natural for goldfish owners to want to adorn the fish’s habitat by adding external materials to complement the colour of the goldfish. It is important to know that just like humans can choke, fishes can do also.
Avoid very tiny materials that can easily get into openings such the gill slits, mouth and even the eyes.
An often ignored material is gravel. Gravel is an important addition of a goldfish’s habitat to try to create the most natural habitat for it.
Sadly, when very tiny gravel, it can choke the fish. Also, do not forget to rinse selected gravel properly to minimize dirt.