What Adaptations Do Fish Have?

Fish have been around a set longer than we have. The beginning pisces evolved about 500 million years ago. homosexual sapiens didn ’ t come along until about 200,000 years ago. For the first 199,850 years or so, their elementary interest in pisces was to catch and eat them. then, about 150 years ago, Charles Darwin showed up and began asking questions about animals and their adaptations. There ’ s a very estimable reason that fish are hush around. They are extremely well-adapted to their environment.

TL;DR (Too Long; Didn’t Read)

fish are adapted to move efficiently and sense their surroundings under water. They ‘ve besides evolved color to help them evade predators and gills to get the oxygen they need to survive.


pisces, like us and all other animals, need a constant add of oxygen to survive. Our atmosphere is about 20 percentage oxygen, so we simply take it in through our lungs. Lungs are useless subaqueous, however, as anyone who has closely drowned can readily and breathlessly attest — tied dolphins and whales need to take in oxygen from the atmosphere to survive. Gills enable fish to absorb oxygen from the water. Fish do not chemically break down body of water, H2O, to derive oxygen. They absorb O2 that is dissolved in the water. There are alone approximately 4 to 8 parts per million of oxygen in water, compared to the 20 percentage in the standard atmosphere we lung-breathing creatures enjoy.


In the grim fish-eat-fish world of the ocean, survival depends on not being eaten, and not being seen can help. Fish are much colored to match their background, and some can actually change color to blend in with their surroundings. big spots on the raise parts of some fish chump predators. The spot expect like eyes, and the pisces appear to be moving in the opposite steering. Predators besides use advantageous coloration. Sharks may be dark on their upper sides and abstemious on their undersides. Prey that look down from above might miss the darkness shark against the blue ocean floor. Prey below might not notice the light shark against the fall coming down from above.

Sense Organs

We humans rely heavily on our smell of sight, and this is important in the ocean as evidenced by the wide array of adaptations based on coloration. Because light up does not penetrate to the deepest depths of the ocean, other senses have become much more refined in fish. While we possess chemosensation — taste and smell — some pisces have far more medium noses than we do. A shark can detect one part per million of blood in water. Some fish have besides adapted to detecting vibrations in the water, an theme that humans borrowed and developed into SONAR.


The streamlined bodies of pisces are perfectly adapted to moving through the water. While whales and dolphins are very distantly related to fish and evolved more directly from land animals with fiddling resemblance to fish, they feature similar body shapes. This is an example of convergent development : the adaptive development of similar structures in unrelated species to the lapp environment. Some differences in locomotion between fish highlight more specific adaptations to individual ecological niches. Forked or indented tails are seen in fish that rely on swimming quickly for hanker periods of time. Fish that do not travel extensively, as part of their survival scheme, tend to have squarely or rounded tails, which are better adapted to quick acceleration and fillet.

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