Goldfish

Fish have what looks like a line of dots running along their sides. In some species there is more than one line. This line is called a "Lateral Line". It contains pressur sensitive nerve endings. These act like our ears and pick up sound and other vibrations which are transfered to the fishes brain. The fish then reacts as required.

i think you would need a medium tank for your fish.

i have a guppy and two black mollies in the same tank,and they get along perfectly fine so far.but sometimes,you get the occasional aggressive molly and it might attack your guppy. you should also ask your local pet store to see which fish can get along and which can't.

Well I don't really understand what your question is but i am guessing that you mean how WELL goldfish do in a 5 gallon tank. The answer is, pretty good if you don't get a full grown one. But be careful, some goldfish live longer than others. out of my 5 goldfish that I have had through my life, 1 has survived three days. One of the others survived about 3-4 months while two others lived for 6 months. my most recent fish just passed away at 3 years. He was my miracle fish. of course, the others were in a bowl and of course tanks are better for the circulation of water. GOOD LUCK :)

Goldfish will do fine in a fountain, as long as they are fed, and that the area is big enough to swim around and not all fountain! As long as the fountain isn't too powerful the fish will do fine.

Why WOULDN'T it kill a fish? When is it ever a good idea to just put any questionable material in a fish tank?

no because if they do they will fight and kill each other or cause major injuries like a stared fin death or other injuries

If your fishes dorsoul(back fin) is down it usually means that your fish is sick. Most fish can live up to 3 months when sick. But some even longer. It all basically depends on what type of illness it has. In some cases it could be deppresion.

Goldfish are arguably the most common aquarium fish. That means they are found in pet stores and aquarium specialty stores around the world. There are any kinds and varieties, and they are descended from the Prussian carp, of Asia. Use the link below to learn more.
gold fish are usually found in Asian waters but it is so tame that people keep it as pets in their tank or in aquariums.
usually in a fish bowl

A black moor is breed of goldfish, similar to most others, if given the right environment, it would live to be around 6-8 years, but the oldest goldfish known is 49 years old, in case you're in an ambitious mood.

Tropical usually refers to Freshwater tropicals; and so the answer is no, because all starfish are saltwater.

Some fish show no visible differences in the sexes while in others the differences are very large and obvious. It all depends on the Genera and species of fish and sometimes also the sub species.

It eat fish food and frozen worms but don't give to much worms it will pollute the water
Goldfish are technically omnivorous, but will do better on a diet high in vegetable matter. They can eat golfish flakes or pellets, lettuce, spirulina algae, peas, aquatic plants, and just general fish food.

If you measure your tank in centimeters and then multiply length by depth by height you will get the volume in cubic centimeters. Then all you need to do is divide that amount by 1000ccm which is the volume of 1 litre.

If is not moving and has not been moving for more than several minutes - he is probably dead. But if he is alive and just hanging around down there, it just means he wants to. Goldfish are naturally bottom feeders and so eat whatever "stuff" they find at the bottom of their living space.

It is okay to touch your goldfish to inspect for disease, or to check them for overall wellness. I do this occasionally with my fish. Be sure to be very gentle, and make sure your hands are wet with aquarium water so you do not disrupt their slime coat.

Do whatever you have to do quickly, and then put them back in the water.

I don't recommend taking them out and petting them. Handling them unnecessarily might cause them undue stress.

Tigerfish are carnivores. Their meat does not taste or smell good.

Fungus/infection is your worst enemy when a fish has a cut. Make sure the water that the fish is in is clean and regularly changed. I would get a fungus preventative (available at most good pet shops) and follow the directions on the bottle/packet.

This will depend on where you live as you may be required to purchase a license and keep a record of what you sell, where, and how much money you make. It's best to check with your local laws or bylaws.

There are so very many to choose from that it is impossible to compare them all. I would advise you to go for an external power filter that has several types of media that can be cleaned at different times without damageing the Bacterial content of the media too much. I do have one warning though. Never ever use an "Undergravel Filter" they are likely to release deadly toxins into your tank if you ever have a power blackout and kill all your fish.

Goldfishes do not lay eggs in the aquariums at home. They require the right temperature, lots of plants and a big tank. When they lay eggs, you can find them attached to a piece of plant or a leaf.

yes, and they make a shabaloo quintin fish... a very rare spiecies

It is possible to hatch and rear the fry without the aid of the parents. It involves the use of Methylyne Blue and air bubbles and is quite a complicated procedure. My advice is for you to let the parents do the job.

If your goldfish are huddled together, there are a few explanations. One, the tank may be cold. The goldfish will huddle together to keep warm. Two, the tank may be too small. The goldfish will naturally migrate to the corners to try to spread out. Other than that, I'm not really sure. I would investigate these explanations first, before searching for others.
i have three fantail goldfish myself they always swim together i think the reason they huddle is because in the pet store the fish lived in a much smaller tank with many other fish it looked like they lived like that for awhile