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Basically, gills and oxygen in the water. The fish will die if any one are missing.

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8y ago
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12y ago

Oxygen

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Q: What substance does seawater contain which fish need for breathing?
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Seawater that contains a substance that fishes breathe?

Seawater and fresh water contains oxygen that fish absorb using their gill. So the substance is oxygen.


What are seawater fish?

A seawater fish is a fish that lives in the sea.


What fishy substance do most lipsticks contain?

Most lipsticks contain fish scales.


Is bluefish a freshwater animal or a seawater animal?

its a seawater fish


What do seawater fish look like?

There are thousands of species of fish and they all look different from one another in some way. Seawater fish look like fish as do freshwater fish.


Is a lionfish a seawater fish?

yes, it is a salt water fish


What are fish scales used for?

In cosmetics, some lipsticks and nail polish contain fish scales. Pearlesence, which is a silvery substance in fish scales, gives lipsticks and nail polish a shimmery appearance.


What are fish scales used?

In cosmetics, some lipsticks and nail polish contain fish scales. Pearlesence, which is a silvery substance in fish scales, gives lipsticks and nail polish a shimmery appearance.


Is a goldfish a seawater freshwater or tropical fish?

Goldfish are freshwater, not saltwater.


Is oxygen soluble in seawater?

Fish and marine life are able to live because oxygen is soluble in water, including salt water/seawater.


How can you tell a fish is not breathing?

Fish breath underwater


Do tropical fish live in seawater?

There are millions of tropical fish in the tropical oceans. But they are all marine fish not freshwater fish. Freshwater tropicals can not live in saltwater.