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Although often described as extremely dangerous in the media, piranhas typically do not represent a serious risk to humans. [3] [28] However, attacks have occurred, especially when the piranhas are in a stressed situation such as the dense groups that may occur when the water is lower during the dry season and food is relatively scarce.
The breeding habits of piranhas in nature are mostly unknown, with most spawning research being done in aquariums. [21] Piranhas are usually able to breed by the time they are one year old. Female piranhas will lay several thousand eggs near water plants, onto which the eggs stick. The males then fertilize the eggs.
How dark the fish become depends on the local water conditions; fish in Peru appear to be the darkest and may be almost jet black. [2] The maximum recorded fish measurement standard length is 41.5–61 centimetres (16.3–24.0 in), [ 1 ] [ 3 ] although a more normal length is around 32 centimetres (13 in), [ 2 ] and they attain a maximum weight ...
The amount of water needed varies by person, weight, diet, activity level, clothing, and the ambient heat and humidity. Water does not actually need to be drunk in pure form, and can be derived from liquids such as juices, tea, milk, soups, etc., and from foods including fruits and vegetables. [347] [348]
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.
This characteristic combined with its large size make it a danger to humans. Piranha's attacks on humans are anecdotal for the most part. The piranha mostly prefers to eat small fish and insects, along with seeds and aquatic plant material. The pygocentrus piraya plays a key role in their ecosystem by regulating the population of other fish [5]
Containing a massive 6.3 million gallons of water, this humungous aquarium is home to whale sharks (the largest fish species in the ocean), the American alligator, manta rays, blue-spotted ...
The wolverine is an effective scavenger, capable of cracking heavy bones and shows the same adaptations in the jaw as the hyenas do. The sagittal crest projects well above the area of attachment of the neck muscles, and in a large animal it extends back far behind the level of the condyles to provide attachments for the relatively enormous ...