Goldfish are generally peaceful and can live in large groups. Although angelfish can be housed with other angelfish, they tend to be aggressive. They are extremely likely to prey on goldfish. read more
Many people keep angelfish and goldfish in small enclosures, but these enclosures can limit growth and lead to health problems. Both fish species require ample space. Angelfish require at least four gallons of water per fish, and goldfish need five to 10 gallons of water per fish. read more
you have a very unique situation either you should keep gold fish or angel or either guppies. because it is always eaiser to handle same type of fishes. Angels are very aggeressive fishes and some times old angel bully newer angels i had this experience. read more