Goldfish

Goldfish lay about 50 to 100 eggs but most don't even make it because they are eaten by other fish. Goldfish usually lay the eggs in the spring because they don't like the climate change. the eggs will hatch in about 48 to 72 hours.
600

If your tank is a 10 gallon (filled to the brim) tank, it will only have about 8 gallons of water in it under normal conditions. The maximum amount of Corydoras you should allow is 4 because the rule is 1 inch of fish needs a minimum of 1 gallon of water. (Corys grow to about 2 inches plus). You will also need a 24/7 running filter and the tank will also need to have at least 50% of its water replaced every week.

I have two beta fish also and i noticed one day there was a bubble nest in the tank. So I went on-line and did research on-line and found out that they do this because they are happy, healthy, and getting ready to mate. They use this nest for their eggs and it is usually under a decoration or near a plant for protection. Try not to move or destroy the nest for they take a long time to make and the fish apparently like it there. They wont keep making the nest if it is removed for my fish went only about a month and stopped making it, so if they stop don't find it a bad thing, for I'm sure the fish is still happy and healthy as ever. But do not mate the beta fish if you are not experienced with it, for beta fish HATE being in the same tank as another for they will try to kill each other. How do I know this? I did research and I sadly have tried it myself.

yes

Fish of the same location or temperaments. In cichlids keeping them grouped by specific locations (i.e. South American cichlids, New American cichlids, Lake Victoria Cichlids, Lake Tanganyika, Lake Malawi, Madagascar, etc.) helps keep deaths down, though it is possible to mix in some circumstances. There are also what is known as community fish. These are your generally more peaceful types such as mollies, guppies, sword tails, tetras, veritas, etc. And remember, just because a type of fish is suppose to act a certain way, does not mean all of them will.

Goldfish, even though they are technically cold-water fish, can do fine at tropical temps. Be careful though, even the smallest species of goldfish you can commonly find needs 10 gallons all to themselves, because they get really big.

one little pinch a day do ot feed more than that

depending on the age and size. baby goldfish should be getting liquid food. usually called 'Small Fry'. as they get older and they look fully developed, just very small, then feed a few flakes of fish food

They don't necessarily get pregnant. They lay eggs and then a male comes along and fertilizes those eggs. But even if they do adult fish left in there with the eggs will eat them.
Goldfish lay eggs.... they can't become pregnant.

If the fish is a pet and not food for a pet then its best not to pick them up with anything but a net. Fish have a slime coat that protects their scales. Touching them with your hands can remove this coat and cant harm your fish. It will most likely give your fish a harsh burning sensation

If you are referring to dalmation mollies, the average gestation period is 28 days.

Different species of fish have different food requirements. Tropical Flakes are designed to feed a mix of tropical fish species. Goldfish food is a product that has been produced specifically to supply all the dietary needs of a goldfish. So yes goldfish can eat whatever you give them including Tropical fish food but it will not neccessarilly be doing the fish much good though.

Basically, stay away from fish that are significantly smaller than the betta as he may think "Yay! Dinner!", and avoid nipping fish, it's best to try some google links and also ask the retailers, they may not provide all the information you need, but they can provide enough that you can get to a good start.

I find young cat fish about 2-4in long get along well, but beware that these fish grow large and will eat the betta once it's mouth is big enough that it'll fit.

The Betta is actually a very good community fish (as long as the aquarium is large enough), and it will get along with most other species of fish. You just cannot put two Betta males together in the same tank. the only thing that really bugs a beta is other fish with big fins, it seem's that they have a complex they need to deal with. Tetras and small catfish like bristlenose and corydoras are good tank mates for fighting fish. also you cant put female betta but you have to check that they don't beat up one another

Read the label and follow directions. If you simply keep sufficient water in a large container overnight the chlorine will evaporate off and you will not need to use water conditioner. Bettas should not be kept in a bowl. The basic rules of fishkeeping are. :- 1 inch of fish needs at least 1 gallon of water (A Betta is a 3 inch tropical fish). :- Every tank needs a permanently running cycled filter. (This converts deadly Ammonia into none deadly Nitrate):- Every tank needs at least 50% of its water replaced every week. (This prevents a build up of excessive Nitrate.) Keep your Betta at around 78F, feed it proper Betta food and follow the above rules and your fish stand a chance. Fail in any of them and I can guarantee that your fish will be constantly getting sick and will live a shortened lifespan.

Air as such is not needed by most fish but disolved oxygen is an absolute neccessity in the water. That is why boiled water is a 'no no'. Boiling removes the gasses from the water. Most tap and rainwater tank water contains sufficient O for fish to live in quite happily provided a properly cycled filter is in use to remove the Ammonia and Nitrite generated by the fish.

Sorry, but no. Guppies are tropical fish, while goldfish arecold water fish. That's a major reason. Another is, when the goldfish get bigger, guppies will be severely harassed or in many fateful encounters. By "fateful" I mean, fish in goldfish's mouth struggling to get out. So please don't mix guppies with goldfish. No matter how nice the tank may look.

Goldfish may take 2-3 years to reach sexual maturity.

Goldfish do not need running water, but they do need a filter that cycles the tank water through filter media. In addition, you need to change at least 50% of the tank water each week making sure that the new water is the same temperature as the old water, and that you add in the recommended dosage of water conditioner per the instructions on the bottle.

No a Goldfish is it's own species, while the Black Molly belongs to the Livebearer family (Guppies,Swordtails, Platys and Mollies

There is a kind of goldfish called the 'Shubunkin' with purple stripes on it but there is no pure purple goldfish species.

he might have a diaese and if you feed him pelleted food stop and give him flaked food

To cut down on algal growth (green water) the addition of surface covering plants like Lotus or Water Lilly (Nymphaea sp.) is usefull as is suspending shade cloth over part or all of the pond. The use of aquatic plants like Myriophyllum sp., Sagittaria sp., and or Vallisinaria sp., (There are many other species of plant you can use.) will also help keep the water clean, add Oxygen and remove Carbon-Dioxide

Goldfish are not healthy snacks. They are definitely one of the healthier kinds. There are better options in the aisle, such as pretzels. If you're talking about eating the actual fish, then whatever floats your boat.

Apart from the fact that they are both fish there is no relationship whatsoever.

yes. just dont put the rocks ON the gold fish...

Serpae Tetra's are red with a black dot on their side.
Red phantom tetras are similar in appearance to that of the serpaes but their dot bares the resemblance of an eye.
Rummy nose tetra's also are red and black in their coloration. The rummy noses have a red dot under their eye and a black and white checkerboard pattern on their tails.