Keeping fish in an aquarium is a wonderful and fascinating hobby, but it requires knowledge and attention to ensure that the fish enjoy a healthy and balanced environment. Here are some steps and recommendations for growing fish in an aquarium:

1. Choosing the aquarium
Size: Choose a size aquarium that fits the number of fish you plan to grow. The bigger the aquarium, the easier it is to maintain the water balance.
Type: There are aquariums with different styles (tropical, freshwater, saltwater). Choose the type you are interested in according to the fish you plan to raise.
2. Preparing the aquarium
Cleaning: Before use, wash the aquarium, sand and decorations with clean water, without soap.
Filtration: Install a filtration system to maintain water quality. A good filter can help get rid of the waste and harmful substances in the water.
Heating: If you choose tropical fish, heating should be used to maintain an appropriate temperature.

3. Adding water
Water: Fill the aquarium with tap water (when treated with a disinfectant) or distilled water.
Dechlorinate: Use a dechlorinator to ensure the water is safe for fish.
4. Adjustment of conditions
pH: Make sure the pH of the water is suitable for the type of fish you want to raise.
Temperature: Make sure the water temperature is suitable for the needs of the fish.
5. The choice of fish
Types of fish: Research the types of fish that interest you and make sure they are compatible with each other.
Amount: Do not overload the aquarium - rule each fish at a water height of 1 inch per fish for every 1-2 gallons of water.
6. Introducing the fish
Preparation: Before introducing the fish, be sure to let the aquarium run for at least two weeks to balance the chemical levels.
Gradual introduction: introduce the fish to the aquarium gradually, to avoid shock.

7. Treatment and care
Feeding: feed the fish in the right dose, two to three times a day, and remove food residues.
Cleaning: Perform regular cleaning of the aquarium and water change (about 10-15% of the tank every week).
Monitoring: Monitor the health of the fish and check them regularly to detect health problems.
8. Extras and accessories
Decorations: Add decorations and spaces for the fish so they can hide and feel safe.
Plants: Plants can improve water quality and provide shelter for fish.
Summary
Raising fish in an aquarium is a fun task, but requires attention and commitment. With the right planning and care, you can enjoy a beautiful and healthy aquarium with happy fish.