Goldfish

If they are not friendly goldfish species than they will but in general they don't. If they do than you probably don't feed them enough but that is really unlikely.
yes they do. Its all a matter of size.

they get very slow and dont won't to play much and always lay down

In most cases it's due to overfeeding and constipation. Ryukin goldfish are more prone to this due to their body shape, so make sure that you feed cooked & deshelled peas at least once a week to help avoid constipation.

Typical signs of goldfish illness include lack of appetite, loss of scales, loss of coloration, abnormal spots on the fish, staying at the surface of the water, and swimming upside down or on its side.

Domestic cats are highly predatorial, wary, inquisitive but not very persistent creatures by nature when an easier meal is available. It is more of a play and curiosity scenario rather than a full attack, and may only last a few seconds to a couple of minutes, then it usually looks for more mischief to get up to after a short nap.

A Terrapin has a very hard shell and is usually sufficiently protected from most household cat attacks by tightly squeezing itself inside its' shell.

Some cats on the very rare occasion, have been known to persist for long periods and use their claws to dig inside the shell to eventually get a hold on some fleshy part, and may eventually make the poor terrapin stressed enough to lose its struggle to remain tightly packed in its shell. So the answer is unlikely, but possible, as most cats lose interest very quickly.

A larger cat such as a Jaguar and bigger, would have more success due to their larger size and more powerful bite to enable them to crush the shell. Jaguars have been documented eating tortoises on many occassions.

Sometimes fiddler crabs or other crab species are sold for aquariums. Most require brackish or even saltwater. Few thrive in freshwater. Most require live insects, worms, and/or small fish to eat. They can harass or kill other small animals in the tank with them. Many have nasty pinchers. For this reason, they are best suited to a set-up solely for them. Almost all of the crabs sold for "freshwater" tanks require a haul-out spot. The water level must be low enough to allow them to get in and out of the water with ease. If denied the ability to get out of the water, they will eventually die. They most likely also require full spectrum lighting over the basking site but studies probably have not been done on this. Fiddler crabs and similar species stay relatively small, at a few inches in size.

Provided you have a combined heater/thermostat, thermometer, and filter and the tank is set up with substrate, plants and lights, you could have fish from many species in your little aquarium. Many small Tetras come to mind as do several small Gouramies, small Danios and even some of the small Cichlids like Rams. The rule to remember is 1" of fish needs 1 gallon of water so that you don't overstock and have disease and other problems.

um...... this is an opinion but for me its bubbles,bubba,goldie,fish,percy jackson, and these are weird but u might like them : hippo,bob,seal,ocean,goat,blair, ect. ok just random words :) i could think of !000,0000,0000 of names

There are many reasons why a goldfish would die; it may have died of old age, poor water quality, overfeeding, deformity, or the most common reason is disease.

or it is because of that stupid crap you feed it. it prefers dirt.

I have had my goldfish for 12 years and in the last 2 years it has developed a habit of splashing with it's tail as I walk by . It does this about 2 times a day when it is hungry. If I don't feed it it will splash every time I walk by until I do feed it.

There will be a problem either with the water or the diet. My advice is to do a few large water changes taking all the proper precautions and equalising all parameters. Then I would improve the fishes diet by adding a feed of earthworms at least once a week.

You should see that the female goldfish appears fatter than usual due to the eggs she is carrying. The male will have white spots on his front fins and gill covers and will pay the female a lot of attention chasing her around the tank or pond.

Usually a sick fish has its dorsal fin down rather than fully extended. Other things to look for are a sunken belly, any kind of whitish, stringy or fungussy (like cotton wool) stuff attached to the fishes body, mouth or fins. Scales should be laying flat smoothly with none missing. Splits in fins are another thing to warn you of problems as are whiteish spots about the size of pin pricks on the body and fins of a fish. Another thing to watch for is the way the fish swims and positions itself in the water if it seems to be struggling to either go up or down in the tank it has problems. There are heaps of other symptoms of illnes but the ones above will probably help you a little.

Your Molly will be very hungry and may be a little frightened so make sure she has been getting enough food and that she has a space in the aquarium to be on her own for a bit. Don't worry if she doesn't eat for the first couple feeding, this is normal sometimes. So with enough food and alone time your Molly will be back to her old self within a few days

Comet goldfish usually lay between 500-5,000 eggs. The reason why they lay so many is because goldfish eggs, and fry, have high mortality rates. Having so many eggs ensures that at least some of the goldfish fry will reach adulthood.

The fish has a fatal, untreatable disease called dropsey and should be euthanased. This problem is usually caused by very poor water conditions. ie polution due to insufficient water changes or poor filtration or both. To avoid this kind of thing happening you need to do at least 50% water change weekly as well as having a properly cycled filter operating in the aquarium. I hope you are also sticking to the basic rule of 1 inch of fish needs 1 gallon of water. If you are overstocked then you will need to do daily water changes of at least 20% per day as well as a large 75% one on week ends and maybe even more if you wish to avoid constant health problems with your fish.

Determining the gender of goldfish is a lot harder than people may suspect. During breeding season, the males will get what we call breeding stars on the cover of their gill plates; they look like tiny white bumps.
You might also be able to tell by their vents under their tail, but it takes a lot of practice and knowledge to easily tell them apart when it's not breeding season.

In addition, even if it is breeding season, and you have all males, or all females in your tank, it remains difficult to tell the difference as the males need a female in the tank, and vice-versa for the females so that they will show typical breeding behaviour.

yes the gold fishes eat everyday. if they are Hungary or not they tend to eat all the time..they are gluttons..but even if they are not fed they can live upto 15 days

None fatty meats like chicken breast, bits of bread and biscuit, bits of cooked vegetables like carrot, spinach etc. Insects like flies, then there are maggots and earth worms etc. It is very hard to feed a goldfish a balanced diet from your own supplies at home that is why pet shops carry Goldfish food. It is cheaper and far safer to feed your goldfish properly made food and supplement it with a few earthworms occasionally.

Goldfish have several different fins that assist them in moving from place to place. Starting from the back, the caudal fin moves in a left to right motion to propel the fish through the water. The anal and ventral fins are for steering. A fish's pectoral fins are also used for steering, but in some fancy breeds these fins are also used for propelling the fish, such as with the Ryukin. Last but not least, the dorsal fin on the back of the fish is used for stopping. The fin is fully erect when stopped, and lower on the body when in motion. Fun fact, a goldfish cannot swim backwards.
Goldfish use their tail and fins to swim through water. To learn more, see the related link.

sea lions