1.  Betta 

Siamese fighting fish is known as Betta. Betta is one of the most popular aquarium fish for the aquarist. Its origin came from Cambodia, Vietnam and Thailand. Its colourful and flowing fins can attract anyone. Betta fish usually eat two to four pellets per day. Betta aquariums should provide ample space, filtration, and warm water conditions to thrive. Despite their aggression towards other bettas, they can display interactive behaviour and form bonds with their human caretakers, making them popular pets in the
aquarium hobby.

2.  Neon Tetra

Neon tetra is a freshwater aquarium fish which is popular because of its vibrant colour, small size and low cost. Providing a suitable habitat, feeding different diets, and performing routine water changes are important for them.  They are comfortable in a group for living. With due care to them, they can survive upto 5 years. They are very much active and tank and their schooling is much more attractive to the aquarists. 

3.  Angelfish

Angelfish are commonly popular for their unique shape, colour and behaviour. They are kept in a warm aquarium and the temperature of the tank should be kept around 80ºF. They are categorised in semi-aggressive groups and sometimes may eat small species. Adequate amounts of food should be kept available in the tank so that they don’t attack the other mates. There are varieties of angelfish like silver, gold, black Iace, smokey and chocolate. All the categories are very much unique in nature and increase the beauty of the tank. 

4.  Guppy

Guppy is one of the most popular species in aquarium hobby. It has been distinguished from other species because of its lively characteristics and colourful appearance.  Whatever colour you are thinking to have, there is always a possibility to find a guppy. Average size of a guppy is 2 inch long. It can be accommodated in a small or medium range tank. They look outstanding in a planted aquarium and are very much friendly to other mates. 

5.  Pearl Gourami

Pearl gourami is popular to aquarists because of its colourful appearance and hardiest nature. Pearl gourami is generally a peaceful  fish. They are more comfortable in large aquariums. Usually they are not kept with aggressive fish. It is better to keep pearl gourami with the
same sized fish and the same temperamental nature. 

6.  Molly Fish

Molly fish were named after their scientific name Mollienisia.  This fish is one of the popular species among aquarists all over the world. Molly is basically fall in the category of hardy species. Warm aquarium water temperature is essential for their healthy lives. Few research showed that under certain circumstances guppy can be interbreed with molly. Close relationship between molly and guppy was confirmed genetically.

7. Goldfish

Goldfish is one of the finest aquatic fishes. Many aquarists start their aquarium hobby with a tiny tank or jar consisting of a single goldfish. Goldfish resembles carp but it differs by having no mouth barbels. They are very hardy and the maintenance cost is very low. Back in 17th century in China, goldfish were considered as a symbol of luck and fortune.

8.  Barbs

Barbs are very colourful and hardy species among the aquatic fish group. They are popular to aquarists because of their schooling features. Since they are very much active in tank, their mates should have similar characteristics. Because of their schooling habits, a larger aquarium is preferable for their healthy lives. Usually they are kept in groups. Most of the barbs prefer acidic aquatic water.

9.  Killifish

Killifish are a diverse group of freshwater and saltwater fish known for their vibrant colors and unique breeding habits. They are popular among aquarium enthusiasts for their hardiness and adaptability to various water conditions. With lifespans typically ranging from one to three years, killifish are prized for their beauty and relatively short breeding cycles. Their ability to survive in temporary water bodies has led to remarkable adaptations, making them fascinating subjects for study in evolutionary biology.

10.  Discus Fish

Discus fish are iconic freshwater aquarium species cherished for their striking colors and elegant, disc-shaped bodies. Native to the Amazon River basin, they thrive in soft, acidic water conditions. Due to their sensitive nature, maintaining optimal water quality and a stress-free environment is crucial for their health and vibrancy. Discus fish are social creatures that form hierarchical groups, making them captivating additions to community tanks with compatible tankmates.