Jun 6, 2025
Some fish may be stunning to look at, but their size and behaviour demand spacious tanks. Here we list some such pet fish breeds:
Canva
Arowanas are known for their metallic sheen and distinct dragon-like body. They can grow upto 3 feet long and so, they need lots of space to swim.
Canva
Oscars are intelligent and they are known to interact with their owners. They are usually sold when they are young and small, and they grow big pretty quick and are territorial. And so, they need a big tank for their comfort and mental stimulation.
Canva
Discus are peaceful and elegant, and hence often called the “kings of the aquarium.” However, they need plenty of space, stable water conditions, and do best in groups-- thus requiring a large tank.
Canva
Silver dollar fish are fast-swimmers and they thrive in schools. They can grow upto 6 inches in size and so they need a big tank to avoid stress and injury.
Canva
Pacus look similar to Piranhas, and they can grow over 2 feet long. And so, they need a huge tank to move around and live peacefully.
Canva
Graceful and silvery, Bala Sharks are schooling fish that grow up to 14 inches long and so they require big tanks to thrive.
Canva
Clown Knifefish are exotic, nocturnal fishes and they can grow up to 3 feet long. They are shy fish, require dim lighting and a spacious, well-filtered aquarium to stay healthy.
Canva
Peacock Bass is colorful and powerful fish. It needs a huge tank with excellent filtration and space to mimic its river-like habitat and hunting behaviours.
Canva
Giant Gourami, as their name suggests, can grow up to 2 feet in length. They are calm yet curious in nature; considering their size, they need a big tank to live peacefully.
Canva
This river monster has striking colours but grows rapidly beyond 4 feet. Thus, it's best kept in massive aquariums or indoor ponds.
Canva
Thanks For Reading!
Read Next