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a) Why is a fish cold-blooded?
b) Why do fish swallow their prey whole?
c) Describe the motion of a fish as it swims.
d) How many fins does the goldfish have? Which of those fins occur in pairs?

2007-04-12 15:59:24 · 7 answers · asked by Bridget M 1 in Pets Fish

7 answers

Fish are cold blooded to help them survive. In colder than normal conditions, i.e. during the winter, there is less food available. In cold-blooded animals, their metabolism slows down as it gets colder, so they need less food.

Not all fish swallow their prey whole, but those that do swallow their prey whole do it because it is easy. They eat fish small enough to fit in their mouth so they don't have to spend extra energy killing and chewing their prey. For cold-blooded animals, energy conservation is vital to their survival.

The motion of a fish depends on the different kind of fish. Some fish sway their body side-to-side to swim, some fish such as puffers use only their pectoral fins to push themselves around.

Goldfish have 7 fins, the pectoral fins and the ventral fins are paired.

2007-04-12 17:23:24 · answer #1 · answered by fish guy 5 · 0 2

A fish is cold blooded as a survival mechanism. When the water gets cold, there is less available food, the fish's metabolism slows down so it doesn't need to eat as much.

Some fish swallow their food whole because they can, also because that is how thier digestive tract best utilizes the nutrients in the food.

Some fish swim in a serpentine motion, some in a rectilinear motion.

Common feeder or comet goldfish have 7 total fins,dorsal(back) caudal (tail) anal, pelvic & pectoral. The pectoral and pelvic fins are paired.

In fancy or fat bodied gold fish,they can have up to 11 total fins. The pectoral, pelvic, anal & caudal fins can all be paired. However with the vast variety in genetics & the ability to interbreed with common goldfish this is not always the case. I have a fan tail goldfish who has a single anal fin, and another that has a double fin. So it really depends on what type of goldfish, and it can even vary between fish of the same type.

2007-04-12 16:36:16 · answer #2 · answered by Anonymous · 0 1

Fish are cold blooded to be able to survive their surroundings. They cannot generate
Not all fish swallow their prey whole. Puffers will scale a fish first then take chunks out of it as well as a great white shark. Theywill grab large chunks out of their prey before eating it.
Some fish swim in an S pattern to propell them forward, other fish swim vertically like the seahorse with a forward thrust.
Gold fish fins, depends on the type of gold fish. for example
Ranchu's, Pompoms, Bubble eyed some lionheads do not have dorsal fins at all .

With so many species of gold fish it is impossiable to list each one and which have double fins. Fantails , black moores, Celestial, Veil-tails, Telescope eye, Pearl Scale, and lionheads have double tails, yet not all exact species and not all the time. Commets and shubs can also have double tails but more likely not. This depends on breeding and lineage.

Caudal or Tail Fins vary greatly among the different varieties. This structure consists of a flat membrane supported by fin rays. It develops from a single tail (two-lobed) to the doubled or bilaterally-paired fins (four-lobed).
Anal Fins can develop into short or long, single or double types. Double-tail or Fantail varieties must have double anals.

Dorsal Fins

Pelvic & Pectoral Fins vary in shape and size depending on the breed. They are in pairs

Gold fish have as little as 5 as many as 7

2007-04-12 20:43:42 · answer #3 · answered by danielle Z 7 · 1 1

1-Fish are cold-blooded because they do not produce their own body heat
2-fish dont have a jaw like hours, and nor do they have hands with which to move the food around with. Btw not all fish swallow their food hole.
3-a fish moves its body in a S shape basically curving
4-goldfish normally have 4, the 5th one is just a tube that comes out during mating.

2007-04-12 16:03:23 · answer #4 · answered by Anonymous · 1 2

a) cos you haven't got a heater in the water
b) they prefer that to spitting them out
c) it goes chick chicky boom chick chicky boom chick chicky boom
d) i don't know but they're the only bits that don't taste good

2007-04-12 17:20:34 · answer #5 · answered by P4BZ 4 · 0 1

Same answers as your next question.

2007-04-12 16:25:10 · answer #6 · answered by DAGIM 4 · 0 1

Yes,I can answer these questions,can you?

2007-04-12 16:08:41 · answer #7 · answered by PeeTee 7 · 0 4

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