forofaro new logo

What is Difference between pacu and piranha?

Pacu and piranha are two types of freshwater fish that live mainly in the Amazon River and other rivers in South America. Pacu mainly depend on aquatic vegetation but, sometimes feed on snails and insects while piranha eat small animals, snails, and plants. Most people often confuse pacu and piranha due to similar anatomical and behavioral characteristics.

difference between pacu and piranha
difference between pacu and piranha



Pacu Fish


triangular shaped and sharp teeth

square shaped teeth like human teeth


Grows up 17 inchies and can weigh up to 7.5 pounds

Grows up 28 inchies and can weigh up to 50 pounds



Mainly herbivorous

Eat up

Small animals, snail, plants, and fruit

Aquatic negetation and fruits and seeds that fall into water


Tends to gather in group

Lives as a single animal, who is territorial

Treat Eggs

Stick close to their eggs

Allow the eggs to hatch on their own

Pacu - Definition, Characteristics, Behavior

Pacu is a freshwater fish related to the piranha. But, it is herbivore and very peaceful when compared to piranha. The spur teeth are short and blunt. Therefore, they resemble human teeth. This means they are designed to crush seeds and nuts. Therefore, the drive bite does not cause damage. Also, Pacu is a big size when compared to piranha.

See also  11 All you need to know about betta fish Life Span

In general, the Pacu live as individuals and they are territorial.

Piranha - Definition, Characteristics, Behavior

Piranhas are freshwater fish that live in North American rivers. It is omnivorous, feeding on both animals and plants. Piranhas have a reputation for bitter feeding. Piranha teeth are small and triangular. They were loud enough to hear his flesh. Aggressive behavior of piranhas is especially observed in the state of hunger.

One of the distinct behavioral traits of piranhas is their extreme affection for their eggs. Because around 90% of their eggs survive for hatching.

The conclusion

Pacu is a herbivorous freshwater fish related to piranhas, which are omnivores. Also, Pacu is bigger than piranha and shows aggressive behavior. The main difference between pacu and piranha is the way of feeding and behavior.

Nooru Ariyoushi

Nooru Ariyoushi

Nooruariyoushi has been a fish hobbyist for 20 years and is now a blog writer sharing information about fish and how to care for them.


Please enter your comment!
Please enter your name here

Latest Post


Explore all the incredible creatures

Whether you are interested in getting into keeping new fish or you are completely immersed in the hobby, you are sure to find some information in the number of articles we have created on this topic to help you achieve success. Learn about maintaining the health of your pond, fish health, the types of fish that match your aquarium,
Forofaro We would like to show you notifications for the latest news and updates.
Allow Notifications