No. If it's small enough for the Goldfish to try and eat it, it will. If it's a larger type of crab, like Fiddler or Rainbow, then these need salty water and land to get out on and will try and catch and eat a Goldfish.
If it is kept clean.
yes
Small or Big it should be kept in a huge tank with Filter and Oxygen 10 gallons per Goldfish At least
No, goldfish will not grow to the size of their tank. They will continue to grow and may become stunted or unhealthy if kept in a tank that is too small for their size.
if you have a very aggressive betta fish, placing them with any kind of crab is probably not the best idea. Crabs, even if they are mostly non-aggressive, can rip a betta's long tail and fins to pieces! Bettas could also bother the crab, and then you have a full blown fight on your hands! If you really want to put them together though, watch them carefully for any signs of aggression.
Yes, goldfish may eat shrimp as they are omnivorous and will consume small aquatic creatures like shrimp. It is important to provide a balanced diet for both goldfish and shrimp if kept together in an aquarium.
Goldfish (Carassius auratus) are small ornamental freshwater fish that are commonly kept as pets. Goldfish were originally domesticated from the Prussian carp (Carassius gibelio), a dark greyish brown carp native to Asia. It was first bred for color in China over 1,000 years ago. Due to selective breeding, goldfish have been developed into many distinct breeds and are now found in various colors, color patterns, forms and sizes far different from those of the original domesticated carp.
The goldfish is a domesticated freshwater fish belonging to the family Cyprinidae, which is part of the order Cypriniformes. It is a selective bred variant of the wild carp species, specifically the Prussian carp (Carassius auratus). Goldfish are popular pets and are known for their vibrant colors and various fin and body shapes. They are often kept in aquariums and ponds.
Yes they can
no
There is no record kept of the "oldest Goldfish" but I have known them to live for over 20 years.
The goldfish should never be in the same tank as guppies. Goldfish are coldwater fish and need to be kept below 70F. Guppies are tropical fish and need to be kept above 70F.