Large fish look amazing in a freshwater aquarium. Whether they are centerpiece fish in a community tank, part of a huge aquarium setup, or have their own single-specimen tank all to themselves, a big fish always grabs your attention. 

Typically, the bigger the fish, the more fussy they are about their environment and diet, so find out more about them before bringing any of these species home. 

As a rule, the larger the fish, the more picky they are about their environment and nutrition, so before you bring such specimens home, find out more about them. If you have any little fish in the tank, they may become snacks since most big fish grow from eating smaller fish. 

1. Silver Arowana

This adorable fish can measure up to 120 cm in length. These species are very aggressive and need a lot of space to swim. They are also excellent jumpers, so make sure your aquarium lid closes tightly.

2. Catfish

Also known as the Common Plecostomus, is very common in the aquarium trade. Given the large size of this species, your aquarium should be at least 60 cm in length horizontally and laterally for the fish comfortable living. 

This species is very peaceful, it can feed on water plants, as well as special food, and does not pose a danger to other aquarium inhabitants.

3. Oscar

Oscars are large and aggressive fish that can reach a length of about 30 cm. They come in a variety of colors and can be interesting to watch them in an aquarium. However, due to their aggressiveness, not all types of fish can approach their neighbors.

4. Clown Loach

This bottom dweller can help tidy up some uneaten food that falls to the bottom of your tank. Clown Loach can also eat snails. These large schooling fish can be quite aggressive, especially if handled individually with care.

5. Black Arowana

This large fish has an elegant and fiery appearance. This species can be about 1 meter long. They require a spacious aquarium with enough depth to provide them with a comfortable living environment.

6. Bala Shark

These beautiful fish with silvery sides have a peaceful and docile character. Usually in pet stores they can be sold in the form of small cubs no more than 10 cm in length. But this is exactly the case when you need to find out more about their community, since adults can grow more than 30 cm.

7. Leporinus

Leporinus, or as it is also called, Leporinus fasicatus, is a fairly large fish, growing up to 30 centimeters in length.

Despite being omnivorous, the striped hare eats a wide variety of foods. It loves to snack on live plants and often eats all the greenery in the aquarium. Also, these fish demonstrate their jumping ability, so we advise you to always keep the aquarium lid closed.