Fish can certainly enjoy the beauty of a heavily planted aquarium, but it is important to remember that not all species of fish prefer the same type of environment. Most species of tropical fish will enjoy heavily planted tanks, as the plants provide both shelter and security. In addition, the roots of the plants can help to provide a natural source of food for some types of fish.
Furthermore, the dense foliage can help to reduce the amount of light that enters the tank, which can help to reduce stress in the fish and create a more natural environment. However, some species of fish, such as cichlids and goldfish, may find the dense foliage of a heavily planted tank to be too confining, and may prefer a more open environment.
When selecting plants for a heavily planted tank, it is important to consider the type of fish that will be living in the tank. For example, some species of fish may prefer to hide among the leaves of certain plants, while others may enjoy the feel of a more open environment. In addition, some types of fish may be able to chew on the leaves of the plants, so it is important to select plants that are tough enough to withstand this type of activity.
When setting up a heavily planted tank, it is important to ensure that the substrate is suitable for the types of plants that will be placed inside. Generally, a substrate that is composed of soil or a soil-like material is recommended, as this will provide the plants with the nutrients they need to thrive.
Finally, it is important to ensure that the tank is properly lit, as this will provide the plants with the energy they need to grow. Generally, LED lighting is recommended, as this will provide the fish with the light they need, while also providing the plants with the energy they require.
Additionally, it is important to make sure that the lights are on for at least 6-8 hours per day, as this will help to ensure that the plants are receiving the proper amount of light. Excess iighting will cause algae growth.
Overall, fish can certainly enjoy the beauty of a heavily planted aquarium, as long as the proper steps are taken to ensure that the environment is suitable for the type of fish living in the tank. By selecting the right plants and substrate, providing the correct amount of light, fish can enjoy the beauty of a heavily planted tank.