There are actually two types of pond fish that many people choose from for their ponds. These two popular choices are gold fish and koi fish. Both types of fish can adapt well to a pond and are also long lived. Many pond owners have their own preferences when choosing the kind of pond fish they want.

Motion

Between the goldfish and the koi fish, gold fish are more robust swimmers than the koi fish. This means that one can expect speedier actions and movements from the goldfish than from the koi fish. If the pond owner prefers agile and speedy swimming pond fish, choose the goldfish. Koi fish are more relaxed and calm swimmers especially when there are no food pellets and threats in the water.

Pond Size And Equipment

Koi fish need larger room and deeper depths than goldfish. This means that if the pond owner prefers koi fish, he or she needs to make provisions that meet the needs of the koi fish. Minimum water depth of a koi fish pond is approximately four to five feet, depending on sun exposure and sideways size of the pond. Koi are pond fish that need lots of space and oxygen. They grow at a steady rate and can be overpopulated within just a few years. Adding an aerator and a filter into the pond system can increase the odds of healthier fish and more koi pond fish in the pool.

Gold fish grow according to the space provided for them. This means that these pond fish do not grow steadily but instead grow in tandem with the space they are in. This does not mean that these pond fish stop growing; instead their growth rate slows down when there is less space.

Vegetation

Putting vegetation in the pond will be dependent on the kind of pond fish the owner has in it. Koi fish eat many varieties of vegetation while goldfish do not usually eat these. It may be best to put vegetation at the side of the pond if the choice of pond fish is koi. Choosing the right kind of vegetation which suits the pond fish may be the best option instead of restocking the vegetation every few months.

Choosing between these two kinds of pond fish is not exactly difficult. The choice relies heavily on the preferences of the pond owner and his or her capacity to provide for the fish.