B
Blue-Green Chromis
Chromis viridis
VS
O
Oscar
Astronotus ocellatus
Choosing between Blue-Green Chromis and Oscar? Both are excellent choices, but they have different care requirements and temperaments. Use the detailed comparison below to make an informed decision based on your experience level, tank size, and community goals.
Blue-Green Chromis
Chromis viridisVS
Oscar
Astronotus ocellatusCommon Name
Blue-Green Chromis
Oscar
Scientific Name
Chromis viridis
Astronotus ocellatus
Type
Saltwater / Marine
Freshwater
Difficulty
Intermediate
Intermediate
Temperament
Peaceful
Aggressive
Minimum Tank
30 gallons
75 gallons
Recommended Tank
55 gallons
125 gallons
Temperature
75°F - 82°F
74°F - 81°F
pH Range
8.1 - 8.4
6.5 - 7.5
Max Size
4 inches
14 inches
Lifespan
8-15 years
10-20 years
Diet
Marine flakes, Marine pellets, Frozen foods, Brine shrimp, Mysis shrimp, Copepods
Cichlid pellets, Live foods, Frozen foods, Vegetables, Shrimp
Blue-Green Chromis
✓ Good For
- Community tanks
- Schooling displays
Oscar
✓ Good For
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