Fish

The ceolacanth lived about 410 million years ago. That's pretty old. Living specimens have been caught in recent times, but, as individuals it seems that they 'only' live for about 80 to 100 years. Even older fish fossils have been found, but it has been difficult to identify these as being truly fish. The oldest fish in captivity is reckoned to be about 80 years old. Also, other fish have been caught in the wild which appear to be about 100 years old. See Related Links below these three ads.

Because fish are exothermic (meaning they use heat from outside of their body) they will often become more sluggish or lethargic during winter. Other than that, they will try to keep their same habits. And even pond fish will need a more deeper pond to hibernate.

Because it gave them the ability to bite, which is a helpful tool for self-defense and hunting. No dictionary results were found. Please try another search.

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cats only have one life. the nine lives are a superstition created by the fact that a cat can jump off a high place without dying

http://www.mypets.net.au/flex/articles/525/catfish.cfm

YES or NO ? Do Pangasius hypophthalmus fish have scales ?

No! (and therefore they are not kosher.)

Goldfish dont have to have a filter but they need water conditioner like all fish.Fish can survive without a filter but they are always good to have because you dont have to clean it out as often

Puffer fish are actuall tiny little fish, when they see danger the puff up and they have spikes to protect themselves against predators. They are also very poisonus.

Quite a lot of fish are Hermaphrodites, they can switch their sex as they mature and become breeding stock.

Typically, for all fish they become very large in the belly area in a day and then slowly or rapidly become paler in the shade of whatever color they are. the question of what to do with the babies is under the question what to do with baby algae eaters?

Well, I wouldn't be to happy, I like salmon! Their predators would die out and their prey would thrive. People would have to catch more of other fish so those fish would eventually become extinct... Basically, nothing good. And the worst part is, NO MORE SALMON FOR DINNER!!!! WAAAAAHH

There are three species of the perch: Percaflavescens (Yellow perch), Perca fluviatilis(European perch) and Perca schrenkii (Balkhash perch).

Sharks belong to the Chondrichthyes class which means that they lack what is called "true bone". Their "skeleton" is made up of cartilage, which is the same as the human ear, so they do not have an actual skeleton.

An amberjack is any of several species of large food and game yellowtail fishes of the genus Seriola.

Some of the adaptations that allow fish to live in the water are gills, fins, and scales. The gills allow the fish to live in the water. The gills allow the fish to extract oxygen from the water. The fins allow the fish to swim through the water and help it stear itself. For the scales I'm not sure!

There is not enough Oxygen in the air for the fish to breath. Water has just the right amount of air (O2) that the fish need and in the right proportions.

Fish breath in water with gills. Water is capable to holding within it a very large amount of Oxygen. So it is super-concentrated. But the O2 in our air is far less concentrated then in water, so the fish try to gulp the air through and into their gills, but the gills cannot easily find or absorb the O2 from the regular, unpressurized air.

A marine fish placed in freshwater will likely experience stress and potential health issues due to the drastic change in salinity. The fish may struggle to regulate its internal salt levels, leading to problems with osmoregulation. In severe cases, this can result in the fish becoming weak, vulnerable to disease, and ultimately dying.

Because of the nature if this question, many answers will be highly opinionated. Some people will prefer birds over cats, while others will like cats better than birds. There is no "correct" and sure-fire answer.

Is a yellow perch a 2nd level consumer

Fish that produce their own light are called bioluminescent fish. They have special light-producing organs filled with light-emitting bacteria that allow them to create their own light. This adaptation helps them communicate, camouflage, attract prey, or distract predators in the dark depths of the ocean.

puffer fish blend in with the oceans floor

Yes! of course they do!

Predators of stickleback fish include birds such as herons and cormorants, as well as larger fish like pike and bass. Additionally, mammals like otters and raccoons are known to feed on stickleback fish.

Oxygen partially dissolves in water. Respiratory systems of aquatic animals are adapted to get this dissolved oxygen. They have gills for respiration.

It depends greatly on the species. There are many different species of pufferfish, all which have their own sizes.

Without an exact species, all I can do is provide you with an average size.

Dwarf-type species can grow up to 6 inches (15cm) depending on the exact species.

Typical pufferfish species can grow up to 39 inches (100cm), again, depending on the exact species.

They are to hold the composure of the whole fish. Without the bones they'd just flop around and wouldn't be able to move.