Fish

Anything you want it to man!!

The bony fish belongs to kingdom animalia

yes

Tortoises are commonly accepted as being land animals, so have claws rather than flippers, while turtles are aquatic - either fresh water or marine.

The Asian arowana, or dragon fish lives in southeast Asia. Most arowanas are found in Malaysia, Thailand and Indonesia. Their preferred habitats are slow moving jungle streams.

the smallest lake water fish in the uk is pearch.

yes

i think its the heart beat

Through its gills.

The ocean.

A fish controls its depth by increasing or decreasing the amount of air in its swim bladder.

When a fish has more air in the swim bladder, it is more bouyant and rises to the surface ,but when it lets out the air and the swim bladder fills with water, it becomes less bouyant so the fish sinks.

A Pandaka Pygmy is one of the smallest fish in the world. It is found mostly in the tropical fresh waters of the Philippines.

it mean the fish that was bumped into is going to died unless you pour cooking oil in the tank and lick up the water like a little doggy

Pooka fish r very rare. and they smell like pooka

10

brown trout bass blue gills

Whales, dolphins and porpoises are all mammals (there is an unrelated fish also called the Dolphin or Dolphinfish). These mammals evolved from extinct hoofed carnivores and gradually adapted to an exclusively marine life. Their similarity in form to fish is an example of convergent evolution; anatomical similarity to land mammals confirms their true origins.

"The origins of Fish Philosophy go back to John Christensen's observations of the Pike Place Fish Market in Seattle. Christensen observed that the employees had great fun while interacting with their customers who also enjoyed the experience. As a result of his observations Christensen formulated the four key concepts of the Fish Philosophy which are Play, Make the customer's Day, Be engaged and there for coworkers, Choose your Attitude."

anthrop

Fish are shaped in a variety of shapes,including flat,round etc.

Most of them come under the subclass "Actinopterygii"

In general, yes, most of them mate for life. However, usually if one is killed by a predator then the survivor will seek a new mate, but not before it's chicks are mature and ready to fly.

You can get a variety of fish in the local fish market. The most common include guppies, tetras, and platys. If you are a beginner, I would recommend getting guppies and platys, as they are very undemanding and can cope with different kinds of changes. However, if you plan on getting guppies, please keep in mind that guppies breed very often and you may end up with more fish than you originally anticipated! Another fish that is commonly sold is the goldfish. For more information, ask your local Petco or Petsmart. You can also visit their websites to get a general idea of what kinds of fish are available at the links provided below.

Gas exchange in fish involves the gills.

The gills are on either side of a fish's mouth, and they're made up of a curved gill arch attached with a v-shaped double row of gill filaments. These gill filaments have on them little bumps called lamellae and it's in these that gas exchange takes place.

The Lamellae are very small, only a few cells wide and have a very thin surface for gases to diffuse through into the capillary network, so oxygen can be circulated around the body to cells. Since there are so many gill filaments and so many lamellae on them the surface area for gas exchange to take place is huge.

The disadvantages of gas exchange in fish is that gas exchange occurs underwater. Water has much less oxygen dissolved in it than air, and it has 50% more viscosity so it's more resistant to flow. Bony fish have overcome these problems by adaptions

1) Having a counter current circulation of blood in the lamellae, which means that the water that flows over the lamellae meets the most deoxygenated blood which is flowing in the opposite direction to the water. Oxygen in the water then diffuses into the deoxygenated blood through a concentration gradient. The water moves along the lamellae and loses more oxygen as it goes on. Carbon dioxide is also diffused out of the fish in this way. The deoxygenated blood starts off with plenty of carbon dioxide which it doesn't want, and travels along in the opposite direction to the water coming in. The carbon dioxide then diffuses out of the blood to the water which has a much lower CO2 concentration. Losing more CO2 as it goes on and gaining more O2 so in the end the blood is fully oxygenated. This gas exchange system is extremely efficient for the fish and enables it to extract 80% of the available O2 from water as opposed to humans who can only extract 25% from the air.

2)The water is continuously flowing over the gills in what's called a one-way flow, this means there's no dead space like in human lungs.

The other problem with gas exchange under water is that temperature affects the rate of oxygen diffusion greatly. A higher water temperature means less oxygen dissolved, and a lower temperature means more. So fish cannot survive very well in waters of high temperature. Also the gill filaments are supported by the buoyancy of the waters so that water can flow between them, but in air the gill filaments stick together.

Counter current flow only occurs in bony fish (eg goldfish, snapper) not in cartilaginous fish (sharks).