Aquarian fish are some of the most exotic and beautiful pets available, but caring for them can be daunting to first-time pet owners. Aquarian fish are from the water, after all, and can’t just be tossed into any environment with the assumption that they’ll live happily ever after. That’s why we’re giving you these tips on how to keep your aquarian fish healthy. Follow our guidelines, and you’ll be able to enjoy your aquatic friends without worrying about their well-being!
1 – Use A Large Enough Tank
A large enough tank is a necessary starting point for keeping your aquarian fish healthy. A general rule of thumb is that the tank should be at least ten gallons, but even more, can be better if you have the space. Bigger tanks are better because they allow you to add decorations and other features to create a more natural and comfortable environment for your fish. The size of the tank will also help determine how many fish you can keep, as well as how often you need to perform water changes. Larger tanks require fewer water changes than smaller tanks, but larger tanks also require more maintenance due to their surface area.
2 – Have The Right Filter
You need to have a filter that is strong enough to keep the water clean and healthy. The best filters are those made with a biological filter, which uses bacteria to break down wastes. However, you need to have the right filter for your fish tank size. Don’t make it too big or too small for your fish tank because if it’s too small, it won’t work properly and if it’s too big, you’re wasting energy that could be used elsewhere in the house. A good rule of thumb is to make sure your filter is at least 10% of the volume of your aquarium.
Aquariums come in all shapes and sizes, so be sure you know how much water there is in your tank before deciding on filter size.
3 – Keep Water Parameters Balanced
Keeping your water parameters balanced is one of the most important things you can do to maintain a healthy tank. The key to maintaining this balance is keeping your nitrates, ammonia, and pH levels in check. In doing so, you’ll be able to enjoy happy, healthy fish and a thriving ecosystem.
- Monitor Your Ammonia Levels
One of the most important things you can do to help maintain water parameters is to monitor your ammonia levels regularly. You should always have an ammonia test kit on hand for testing purposes. When your ammonia levels are too high it’s time to do some maintenance such as changing out the water or cleaning up uneaten food from the tank floor. If ammonia levels continue to rise you may need to remove the fish until the issue has been resolved.
- Change Out at Least Half of Your Water Monthly
It’s also vital that you change at least half of your water monthly. If possible, try and change all the water once a month with fresh dechlorinated tap water or distilled water if the tap isn’t available in your area. You should also consider using a gravel vacuum (or siphon) to suck up any leftover debris in the bottom of the tank while you’re changing the water. Finally, make sure you’re not overfeeding your fish and monitor their appetite because this could lead to excess waste building up within the tank which could lead to further complications down the road. Feeding the correct amount of food per day will keep them happy and healthy!
One of the best ways to keep your fish well-fed and content is by feeding them a balanced diet. Look for foods labeled aquarium, vegetable, freshwater, or wet. Avoid flake foods as they tend to have preservatives, dyes, and other additives that can create algae growth and disrupt oxygen cycles within your tank. Instead, opt for live or frozen foods like brine shrimp, bloodworms, mosquito larvae, tubifex worms, and more.
4 – Feed Fishes Properly

Fish need a varied diet to stay healthy. They should have a balanced mix of vegetables, fruits, and proteins every day. Feed them two or three times per day in small quantities. You can use commercial fish food pellets or you can make your homemade fish food by soaking pieces of bread in water and feeding the soaked bread to your fish. You should feed your fish according to their size; the bigger they are, the more they need to eat. If you notice that they’re not eating as much as usual, try adding some fresh vegetables or garlic to their diet for some variety. Fish also need plenty of clean water so make sure that their tank is well-maintained and clean at all times.
5 – Avoid Toxic Substances
Do not overfeed your fish. This can lead to a buildup of uneaten food and toxins in the water, which can then become toxic for the fish. It is best to feed them twice a day, only what they will eat in 3 minutes. Some people recommend feeding them only once a day, while others say they should be fed once every other day. Some people say that you should feed them as many times as they want, or whenever they beg for food. You may need to experiment with this before finding what works best for your tank.
6 – Clean Your Tank Properly
Bacteria from a dirty tank can cause illness in fish. To prevent this, you should clean your tank at least every two weeks. Make sure to scrub the sides and bottom of the tank with a sponge or old toothbrush, and then rinse it well with water. It’s also important to change 10% of the water in your aquarium every week; this will remove any uneaten food that might have fallen to the bottom of your tank. Be sure to use a good quality water conditioner when replacing your water, as tap water may contain chlorine or other substances which are harmful to fish. You should also do a 50% water change if you’ve been using medication on your fish, as it removes both the medication and any buildup that has occurred in the meantime.