New to Fishkeeping? Don't Make These 7 Mistakes

Fishkeeping is a fascinating hobby that can bring joy and tranquility to your life. However, if you are new to this hobby, it is important to be aware of the common mistakes that many beginners make. 

By avoiding these mistakes, you can guarantee the health and happiness of your fish. This article will discuss seven common mistakes that new fishkeepers often make and how to avoid them.

1. Neglecting Proper Research

One of the biggest mistakes new fishkeepers make is not conducting enough research before starting their aquarium. Understanding the needs and requirements of the fish species you are interested in keeping is essential. 

Different fish have different preferences for water temperature, pH levels, and tank size. By researching and understanding these requirements, you can create a suitable environment for your fish to thrive.

2. Choosing the Wrong Tank Size

Selecting the appropriate tank size is crucial for the well-being of your fish. Many new fishkeepers make the mistake of buying a tank that is too small for their fish. Overcrowding can lead to stress, aggression, and poor water quality. 

Choosing a tank that can accommodate the adult size of the fish you plan to keep is recommended. Larger tanks provide more stable water conditions and allow fish to exhibit their natural behaviors.

3. Neglecting Water Quality

Maintaining good water quality is vital for the health of your fish. New fishkeepers often overlook the importance of regular water testing and water changes. Ammonia and nitrite levels should be monitored frequently, as they can be toxic to fish. 

Investing in aquarium supplies such as a water testing kit and a good filtration system can help maintain optimal water conditions for your fish.

4. Overfeeding

Overfeeding is a common mistake made by new fish keepers. It is important to understand that fish do not need to be fed as frequently as other pets. Overfeeding can lead to poor water quality, obesity, and digestive issues. Follow the feeding guidelines for your specific fish species and monitor their eating habits. Uneaten food should be extracted from the tank to prevent rotting and fouling the water.

5. Introducing Fish Too Quickly

Many new fishkeepers make the mistake of simultaneously adding too many fish to their tank. This can cause stress and overcrowding, leading to aggression and disease. 

Aquarists generally recommend adding fish gradually, allowing the tank to establish a stable environment before introducing new inhabitants. This will also give you time to observe the behavior and health of your current fish to ensure they are thriving.

6. Lack of Quarantine

Quarantining new fish before introducing them into your main tank is essential to prevent the spread of diseases. New fish can carry pathogens that may not be apparent initially. You can observe their health and treat any potential diseases by quarantining them in a separate tank for a few weeks before introducing them to your established tank.

7. Ignoring the Nitrogen Cycle

The nitrogen cycle is vital in establishing biological filtration in your aquarium. New fishkeepers often overlook this cycle, leading to poor water quality and stressed fish. The nitrogen cycle involves the conversion of ammonia to nitrite and then nitrate by beneficial bacteria.

It is important to allow this cycle to establish before adding fish to your tank. This can be done by adding a source of ammonia to kickstart the cycle or using beneficial bacteria supplements.


You can ensure a successful and enjoyable fishkeeping experience by avoiding these common mistakes. Conducting proper research, providing the appropriate tank size, maintaining good water quality, feeding correctly, introducing fish gradually, quarantining new fish, and understanding the nitrogen cycle are all essential aspects of fishkeeping. 

Following these guidelines and investing in the necessary aquarium supplies can create a thriving and beautiful underwater world for your fish.

Ready to create a thriving underwater world for your fish? Shop now for high-quality aquarium supplies at Splashy Fish and ensure the health and happiness of your aquatic friends. Start shopping today and take your fishkeeping experience to the next level with Splashy Fish!