goldfish don't bite
Goldfish put anything they can fit in there mouths.
yes
Because they have no teeth to bite you with. They only nibble with their gums.
Pike
There is no such thing as a "vampire goldfish". Except in dreams.well no one or no thing can eat a vampire gold fish because, they will bite it
no, because it is too small and it will die pretty soon
Goldfish are noot aggressive fish, and will not eat a tetra. Unless the tetra is a) dead b) just born and small enough to swim into the goldfishes mouth. On the contrary, Tetras are known to bite goldfish fins
They should never be in the same tank because Guppies are tropical fish and like to be kept over 70F and Goldfish are coldwater fish and like to be kept below 70F. So Goldfish should not bite guppies because they should never be in the same tank together...
If the Koi is large enough it may well eat a goldfish fry but Goldfish and Koi are not fighting type fish so they do not normally bite one another.
Some common breeds of goldfish are: the Black Moor goldfish, the Ryunkin goldfish, the comet goldfish, the common goldfish, the Calico Fantail goldfish, the telescope eye goldfish, the bubble eye goldfish, the pearl scale goldfish and the Oranda goldfish.
The animal with the strongest jaws are the crocodile. The Great White shark also has a very strong jaw and a deadly bite. The force of a bite depends on the location and size of the jaw.
No you cannot put a frog with goldfish; goldfish belong with goldfish