'Falling insect' season length impacts river ecosystems

Insects that fall from the surrounding forest provide seasonal food for fish in streams. Researchers at Kobe University and The University of Tokyo have shown that the lengthening of this period has a profound effect on food ...

'Fish DJ' tackles fish hearing

A 'Fish DJ' at The University of Queensland has used her knowledge of cool beats to understand brain networks and hearing in baby fish.

Fishers caught in COVID-19 net, sink into poverty

Lockdown restrictions following the global spread of the COVID-19 pandemic have severely impacted fishing operations, processing, markets and supply chains, leaving those in low-income groups vulnerable to malnutrition and ...

Compilation of research on PFAS in the environment

Per- and polyfluoroalkyl substances (PFAS) are a class of man-made chemical compounds and a current, emerging concern to environmental health. PFAS substances have unique characteristics-resistance to heat, water, oil and ...

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Fish

Tetrapods

A fish is any aquatic vertebrate animal that is typically ectothermic (or cold-blooded), covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant in the sea and in fresh water, with species being known from mountain streams (e.g., char and gudgeon) as well as in the deepest depths of the ocean (e.g., gulpers and anglerfish).

Food prepared from fish is also called fish, and it is an important food source for humans. They are harvested either from wild fisheries (see fishing) or farmed in much the same way as cattle or chickens (see aquaculture). They are also exploited by recreational fishers and fishkeepers, and are exhibited in public aquaria. Fish have had a role in many cultures through the ages, ranging from deities and religious symbols to the subjects of books and popular movies.

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