Top 7 Small Aggressive Fish for a Small Tank

01 Gouramis

Gourami fish are shoal fish. They are very aggressive towards each other. Gourami are medium to large-sized freshwater aquarium fish. They are easy to care for and can be kept with other fish. Gourami have many species. Their size will depend on their species.

02 Payara Fish

Payara fish belong to the tetra family. Some people call them vampire tetras. They are very fast-moving in water and are quite aggressive. If you want an aggressive and dangerous-looking fish, you can choose them. Their size will depend on their species.

03 Pufferfish

Pufferfish are highly intelligent by nature. They are also aggressive, and these fish are most popular for their unique ability to inflate to almost three times their body size. Pufferfish are also a good choice for fish keepers.

04 Betta

Betta fish are one of the popular fish species, known for their colorful flowing fins. The common name for betta fish is Siamese fighting fish. Male betta fish are very aggressive; males cannot be kept together, as they will kill each other. The adult size of a betta fish is 3 inches (7 cm), and the minimum tank size is 2 gallons.

05 Cockatoo Dwarf Cichlid

If you are looking for a small but highly aggressive fish for your small tank, you should choose the cockatoo dwarf cichlid. They have beautiful fins and a cute yet dangerous look, resembling a gangster. The adult size of a cockatoo dwarf fish is 3 inches (7.5 cm), and the minimum tank size is 4 gallons.

06 Blue Acara Cichlid

The blue acara cichlid, also known as the electric blue acara, normally has playful behavior, but their males are aggressive when they are breeding. They look very colorful. Their adult size is 5.5 inches, and the minimum tank size is 15 to 20 gallons.

07 Exodons

Exodon fish belong to the tetra family, and their common name is bucktooth tetra. These fish are three to four inches long and are very sharp. They form groups and exhibit the behavior of large piranhas. If you want a small monster fish, you can choose them.

Reminder

The name of the fish is mentioned above. They are generally peaceful fish, but some of them can catch smaller fish because they can become aggressive. This aggressive behavior is inherent in them. These fish cannot be kept with larger fish or with master fish because they are small. Always ensure you have sufficient knowledge about your pet before buying any fish. Always learn about them first.