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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.
Fish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology , which is the study of how the component parts of fish function together in the living fish. [ 1 ]
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This chart shows the internal distribution of various viscera and organs from the back view. They include the stomach cavity, the lung, the stomach, the liver, the spleen, the [left] kidney, the mingmen (right kidney considered as 'Portal of Life'), the small and large intestine, etc. Woodcut
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 ...
In practice, fish anatomy and physiology complement each other, the former dealing with the structure of a fish, its organs or component parts and how they are put together, such as might be observed on the dissecting table or under the microscope, and the latter dealing with how those components function together in the living fish.
The European perch (Perca fluviatilis), also known as the common perch, redfin perch, big-scaled redfin, English perch, Euro perch, Eurasian perch, Eurasian river perch, Hatch, poor man's rockfish or in Anglophone parts of Europe, simply the perch, is a predatory freshwater fish native to Europe and North Asia. It is the type species of the ...
The branchial system is typically used for respiration and/or feeding. Many fish have modified posterior gill arches into pharyngeal jaws, often equipped with specialized pharyngeal teeth for handling particular prey items (long, sharp teeth in carnivorous moray eels compared to broad, crushing teeth in durophagous black carp).