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  2. Perch - Wikipedia

    en.wikipedia.org/wiki/Perch

    Specifically in perch, the gas bladder can vary from 12% to 25% of oxygen and 1.4% to 2.9% of carbon dioxide gas. [11] Perch reproductive organs include either a pair of testes (sperm-producing) or a pair of ovaries (egg-producing). [9] The above picture is a labeled image of the internal anatomy of the species Perch Perca flavescens.

  3. Fish anatomy - Wikipedia

    en.wikipedia.org/wiki/Fish_anatomy

    Fish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology, ... Internal organs of a male yellow perch: A. ...

  4. Percopsiformes - Wikipedia

    en.wikipedia.org/wiki/Percopsiformes

    They are grouped together because of technical characteristics of their internal anatomy, and the different species may appear quite different externally. [5] Despite their scientific name and the common names for some taxa, they are not closely related to actual perches in the order Perciformes , and rather represent a freshwater lineage of ...

  5. Yellow perch - Wikipedia

    en.wikipedia.org/wiki/Yellow_perch

    The age of the perch is highly based on the condition of the lake. Most research has shown the maximum age to be approximately 9–10 years, with a few living past 11 years. Yellow perch have been proven to grow the best in lakes where they are piscivorous due to the lack of predators. Perch do not perform well in cold, deep, oligotrophic lakes ...

  6. Pomadasys macracanthus - Wikipedia

    en.wikipedia.org/wiki/Pomadasys_macracanthus

    Pomadasys macracanthus, the longspined grunt or Mexican gray perch, is a species of marine ray-finned fish, a grunt belonging to the family Haemulidae. It is native to the Eastern Pacific from Mexico to Ecuador.

  7. Perciformes - Wikipedia

    en.wikipedia.org/wiki/Perciformes

    Perciformes (/ ˈ p ɜːr s ɪ ˌ f ɔːr m iː z /), also called the Acanthopteri, is an order or superorder of ray-finned fish in the clade Percomorpha. Perciformes means "perch-like".". Among the well-known members of this group are perches and darters (), and also sea basses and groupers

  8. Do fish feel pain? Why some scientists are split on the debate

    www.aol.com/news/fish-feel-pain-why-scientists...

    "That has a lot to do with their anatomy and physiology and the way that their brains and their pain receptors are structured," she said. Sharks and rays do not possess nociceptors, which ...

  9. Nile perch - Wikipedia

    en.wikipedia.org/wiki/Nile_perch

    Capture (blue) and aquaculture (green) production of Nile perch (Lates niloticus) in thousand tonnes from 1950 to 2022, as reported by the FAO [2]The Nile perch (Lates niloticus), also known as the African snook, Goliath perch, African barramundi, Goliath barramundi, Giant lates or the Victoria perch, is a species of freshwater fish in family Latidae of order Perciformes.