How can you tell if a pacu fish is male or female?

To determine the sex of a pacu fish, observe their physical characteristics. Males typically have a more streamlined, slender body and a pointed anal fin, while females tend to be rounder and have a broader, more rounded anal fin, especially when they are ready to spawn. Additionally, during the breeding season, males may display more vibrant colors than females. However, these differences can be subtle, making it challenging to differentiate between sexes without close examination.