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Underwater hearing is by bone conduction, and localization of sound appears to depend on differences in amplitude detected by bone conduction. [7] As such, aquatic animals such as fish have a more specialized hearing apparatus that is effective underwater. [8] Fish can sense sound through their lateral lines and their otoliths (ears).
What level of pain do fish feel? That, too, is unknown. Zangroniz said studies only use a few species of fish and don't represent the more than 30,000 fish species that exist.
Emotional pain is the pain experienced in the absence of physical trauma, for example, the pain experienced by humans after the loss of a loved one, or the break-up of a relationship. It has been argued that only mammals can feel "emotional pain", because they are the only animals that have a neocortex – a part of the brain's cortex ...
One physiological characteristic of sleep goes by the name of "homeostatic regulation". This is the notion that animals need a more or less constant amount of sleep every day, so that if a subject is deprived of sleep one day, the amount of sleep tends to "rebound" (increase) the next few days. This has been observed in zebrafish. At night ...
Synodontis make a sound that sounds like squeaking by rubbing their spines together. They do this when they have been frightened or when they become angry. [2] Synodontis may also squeak when they are taken out of the water. [1] These catfish are small- to medium-sized fish [4] with many species
Side-sleeping may exacerbate pain, especially in the neck or shoulders on the side you sleep on, the experts noted. If you fall asleep on one arm, this can reduce circulation or cause numbness.
The research found that about 41 percent of sleepers who slept on one side had nightmares, compared to 14.6 percent of sleepers who turned the other way. Sleeping on one specific side could give ...
These catfish are migratory, meaning they are especially sensitive to dam construction and habitat degradation, which impede their ability to migrate throughout the waterways. Piraiba, along with other predator fish, are also susceptible to mercury contamination; this, along with their role as an important food source, puts many local ...