Its stomach will grow a little in size if you have multiple compare them roughly
Yes, goldfish eat their young. This is why they lay so many eggs- most of the fry won't reach adulthood because other goldfish/fish will eat them. In pond Goldfish reproduction it is the ultimate case of "Survival of the Fittest".it depends on the situation. They will if they are starving.
Not happily or healthily. Those goldfish need at least 30 gallons of space to live happily and have a long life. If you do successfully breed your fish, remember to remove the babies ASAP. Goldfish like to eat their babies.
The size of a goldfish tank can affect the growth of the goldfish. A larger tank provides more space for the goldfish to swim and grow, leading to healthier and potentially larger fish. In contrast, a smaller tank can restrict the fish's movement and growth, potentially stunting their development.
Rule of thumb is to not mix tropical fish and goldfish.
If your looking to buy, got to "Pets at Home" They sell different varietys of freshwater fish. Goldfish are better. Most only grow up to 16cm, but the only grow depending on how big your tank is. If you have living plants in your tank, you might end up with babies.
Puffer fish are very aggressive fish and will tear the poor goldfish to pieces.
Goldfish are egg laying fish, and unless there is a male in the tank to chase the female and convince her to release eggs, you may not know that she is either female, or even has eggs to release.
it depends on how big it is if it is a goldfish or beta it can be in a bowl.If it is one of those big tiger fish or aqarium fish then put it in a big tank. A fish will grow to the size of the tank or bowl. For instance, say a goldfish is in a tank, it will not grow as big as the tank; however it will grow big enough to be able to swim in their environment. The fish will not overgrow the tank. I had a six inch goldfish in a thirty gallon tank.
Goldfish do not get pregnant.
Yes they will, to prevent this you could buy a fish tank cage.
No, goldfish are freshwater fish. Any goldfish you buy in the store are tank bred and not wild caught.
Yes, but your tank size needs to support it. If you mean that a regular goldfish is a long single-tail goldfish, then you need at least a 40 gallon tank just for the 2 fish due to the size potential of the common goldfish. If you mean a regular goldfish as in a round bodied fantail, or perhaps a ryukin, then you need at least a 30 gallon tank for the 2 fish.