O
Oscar
Astronotus ocellatus
VS
R
Rainbow Shark
Epalzeorhynchos frenatum
Choosing between Oscar and Rainbow Shark? 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.
Oscar
Astronotus ocellatusVS
Rainbow Shark
Epalzeorhynchos frenatumCommon Name
Oscar
Rainbow Shark
Scientific Name
Astronotus ocellatus
Epalzeorhynchos frenatum
Type
Freshwater
Freshwater
Difficulty
Intermediate
Beginner Friendly
Temperament
Aggressive
Semi-Aggressive
Minimum Tank
75 gallons
30 gallons
Recommended Tank
125 gallons
55 gallons
Temperature
74°F - 81°F
72°F - 79°F
pH Range
6.5 - 7.5
6.5 - 7.5
Max Size
14 inches
6 inches
Lifespan
10-20 years
5-8 years
Diet
Cichlid pellets, Live foods, Frozen foods, Vegetables, Shrimp
Algae wafers, Pellets, Vegetables, Flakes
Oscar
✓ Good For
Rainbow Shark
✓ Good For
- Community tanks
- Beginners
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