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Jun 7, 2024 · Within the Serrasalmidae family, pacus are closely related to piranhas but are distinguished by significant differences in morphology, diet and behavior. The taxonomy of pacu fish has evolved with ongoing research and genetic studies, leading to a more nuanced understanding of their relationships within the family Serrasalmidae .
- Desiree Bowie
Pacu (Portuguese pronunciation:) is a common name used to refer to several species of omnivorous South American freshwater serrasalmid fish related to piranhas.Pacu and piranha do not have similar teeth, the main difference being jaw alignment; piranha have pointed, razor-sharp teeth in a pronounced underbite, whereas pacu have squarer, straighter teeth and a less severe underbite, or a slight ...
Both pacu and piranha are deep-bodied fish that mainly live in freshwater bodies. Pacu is related to piranha only that pacu is big in body size as compared to the piranha. The main features that make pacu different from piranha are; the anatomy of their teeth, mode of nutrition, and their behavior. More sources and references:
- They’re best known for 1 species. When most people think of pacu, they are likely thinking of Piaractus brachypomus, also known as a red-bellied pacu or pirapitinga.
- Pacu are difficult to classify. Researchers can’t seem to agree on which fish are considered pacu or how these fish are related to one another. Some forms of analysis use DNA to investigate the relationships among the different fishes.
- They’re not piranhas. At first glance, a pacu and a piranha look very similar, and both belong to the Serrasalmidae family. However, there are important differences in tooth shape and diet that set pacu apart from piranhas.
- They have a massive geographical range. The pacu’s original habitat spanned throughout tropical and subtropical freshwater environments in South America.
The main difference is that pacu fish are predominantly herbivores, while piranha varieties are omnivores. Piranha teeth are sharp and razor-like while pacu teeth are blunt and short. Equally, piranha are schooling fish while pacu prefers to live singly. Well, if you want to decipher about these two fish, let’s cut to the chase and see how ...
Jul 18, 2024 · Pacu teeth are square and straight, unlike the pointed, razor-sharp teeth of piranhas. The red-bellied pacu is a cousin of the piranha, native to the tropical and subtropical regions of South America. While they are related, there are some key differences between the two species, particularly in their dental characteristics and feeding habits.
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Jul 19, 2024 · The pacu fish, native to the tropical and subtropical regions of South America, is known for its distinctive teeth, which strikingly resemble human molars. Belonging to the family Serrasalmidae, pacus are closely related to piranhas but differ significantly in their dental structure, diet, and behaviour.
