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Piranhas will often scavenge, [9] and some species such as Serrasalmus elongatus are specialized scale-eaters, feeding primarily on scales and fins of other fish. [3] Scale- and fin-eating is more widespread among juvenile and sub-adult piranhas. [20] Piranhas lay their eggs in pits dug during the breeding season and swim around to protect them.
Like most in the Serrasalmidae family, piraya piranhas dental morphology has a major influence for their inclination toward piscivorous and herbivorous behavior [3]. Members of this genus bear one row of sharp, triangular teeth with a strong lower jaw, which enable them to slice and mince prey with ease [4]. This characteristic combined with ...
Red-bellied piranhas often travel in shoals as a predatory defense, as well as for the offense. In studies that tested the piranhas' reactions to a simulated predator attack, resting opercular rates returned to normal more quickly among piranhas that were in shoals of eight rather than in shoals of two. Although it has been presumed that ...
A new species of fish has been discovered in the Amazon: a piranha relative with humanlike teeth. The eye-catcher was named after a “Lord of the Rings” villain.
To emphasize the diversity of diets, authors commonly highlight the fruit- and leaf-eating pacus and the highly carnivorous piranhas. Most in the family other than piranhas are primarily herbivorous. In contrast, piranhas have been long believed to be strict carnivores. [4] Many species change diets depending on age and resource availability. [4]
They will also eat the scales and fins which they can nip off other fishes. They are well known scavengers, and feed on carcasses within the river. [ 2 ] [ 5 ] This is not a sociable species and normally lives solitarily.
Generally, TDEE calculators estimate BMR based on a person’s height, body weight, age, and gender assigned at birth. Then, they use a physical activity multiplier with the BMR. Then, they use a ...
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