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Parts Of A Fish And Their Functions Pdf

parts of a fish and their functions pdf

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Published: 24.04.2021

Fish Anatomy

The following illustration of a largemouth bass shows some of the common external features that are used to describe the differences between fish that are explained in more detail below. Fish are animals that are cold-blooded, have fins and a backbone. Most fish have scales and breathe with gills. Approximately, 22, species of fish began evolving million years ago. The largemouth bass illustrated above has the typical torpedo-like fusiform shape associated with many fishes.

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The digestive system, for example, consists of organs such as the mouth, the stomach, and the intestine Fig. In chimeras and bony fishes, the operculum covers the posterior end of the head, which protects the gill openings. Fig 4. UV vision is especially useful for reef fishes. The shape, size, and structure of body parts permit different fishes to live in different environments or in different parts of the same environment. Taste is another form of chemoreception.


The body of the fish is protected by a thin but hard coat of overlapping scales and a coating of slime! The lateral line is a line of very small pores (holes) that sense water movements and vibrations. Fish use their gills to breathe. They suck in water through their mouth and breathe out through the gills.


parts of a fish and their functions pdf

parts of a fish and their functions pdf

Fish anatomy is the study of the form or morphology of fishes. It can be contrasted with fish physiology , which is the study of how the component parts of fish function together in the living fish. The anatomy of fish is often shaped by the physical characteristics of water, the medium in which fish live.

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Use Advanced Search to search by activities, standards, and more. This means that the excretory system is affected by where a fish lives. Just like human legs, pelvic fins are associated with the pelvis of the fish. You have reached a section of Exploring Our Fluid Earth that is still under construction. Table 4. Skeletal muscles are voluntary, meaning that they move only when the thinking part of the brain signals them to move.

Use Advanced Search to search by activities, standards, and more. Fishes come in a diverse array of forms, many with special modifications. The shape, size, and structure of body parts permit different fishes to live in different environments or in different parts of the same environment. The external anatomy of a fish can reveal a great deal about where and how it lives. When describing the basic anatomy of an organism, it is useful to have some common terms to help with orientation.

Oxygen and carbon dioxide dissolve in water, and most fishes exchange dissolved oxygen and carbon dioxide in water by means of the gills. The gills lie behind and to the side of the mouth cavity and consist of fleshy filaments supported by the gill arches and filled with blood vessels, which give gills a bright red colour. Water taken in continuously through the mouth passes backward between the gill bars and over the gill filaments, where the exchange of gases takes place.

 А это не так? - язвительно заметил Хейл. Сьюзан холодно на него посмотрела. - Да будет.  - Хейл вроде бы затрубил отбой.  - Теперь это не имеет значения.

 Н-нет… Не думаю… - Голос его дрожал. Беккер склонился над. - Вам плохо. Клушар едва заметно кивнул: - Просто… я переволновался, наверное.  - И замолчал.

The respiratory system

1 Comments

  1. Adam M.

    30.04.2021 at 14:31
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