Angelfish are commonly popular for their unique shape, colour and behaviour. They are categorized in semi-aggressive groups and sometimes may eat small species. There are varieties of angelfish like silver, gold, black Iace, smokey and chocolate. All the categories are very much unique in nature and increase the beauty of the tank. Usually, freshwater angel fish are hardy. They prefer to swim the middle level of your tank. They are found active much during day time than night.

 
Tank Size:
Angel fish can be grown 6-8 inch long and they have long fin too. Since they are territorial and categorized as semi aggressive, larger tank is preferable for them. While selecting tank for angelfish, try 50-55 gallon tank for 4-5 fishes. They like to school together therefore keeping group of fish is essential for angelfish.  
 
Water Quality:
Standard pH level for angel fish tank should be maintained between 6.4-6.9. Comfortable water temperature for them ranges between 75-82ºF. A bit of acidic soft water is essential for their healthy living. Try to change 25% of water two weekly so that they get fresh water. Maintain good filtration system for this species.
 
Feeding:
Angelfish need a balanced diet for healthy living. Flakes, frozen diet, pellets, bloodworm and brine shrimps are recommended for angelfish. Use both meat and vegetable diet for proper nutrition of fish. Feed 2-3 times daily and not more than 2 minutes at a time.
 
Tank Mates:
Angelfish can be compatible with various species such as tetra, gourami and dwarf cichlids. However, it is important to keep adequate space inside the tank  to achieve a harmonious environment.  Angelfish sometimes become aggressive to tiny fish like neon tetras and guppies. Again, they shouldn’t be kept with other aggressive fish like large barbs. Few hiding spaces may be useful in angelfish tank.
 
Common Health issues:
Remaining aware of few common health issues about angelfish will allow you to keep the pet healthy. There is very common disease of angelfish is fin rot which may occur due to bacterial infection. By routine water changing and keeping aquarium clean, you can prevent fin rot issues. Another very common disease of angelfish is ich or white spot disease. It may be the cause of parasite and it is introduced by new species and materials used in the tank. Before introducing new mates and materials in the tank, go for quarantine and disinfect the materials.
 
Tank Maintenance:
Routine tank maintenance is essential for the good health of your fish. Perform 30% water changing weekly to eradicate accumulated toxins. Cleaning of filter is another important task for angelfish tank. Sometimes, filter may get clogged by the debris and uneaten food waste. Thus the optimal performance of filter will not be achieved. See the cleaning guidelines of your filter from the manufactured pack.  Additionally, weekly testing water parameter for ammonia, nitrate and pH level is also important.