C
Comet Goldfish
Carassius auratus
VS
J
Jack Dempsey
Rocio octofasciata
Choosing between Comet Goldfish and Jack Dempsey? 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.
Comet Goldfish
Carassius auratusVS
Jack Dempsey
Rocio octofasciataCommon Name
Comet Goldfish
Jack Dempsey
Scientific Name
Carassius auratus
Rocio octofasciata
Type
Freshwater
Freshwater
Difficulty
Beginner Friendly
Intermediate
Temperament
Peaceful
Aggressive
Minimum Tank
30 gallons
55 gallons
Recommended Tank
55 gallons
75 gallons
Temperature
65°F - 75°F
75°F - 80°F
pH Range
7 - 8.4
6.5 - 8
Max Size
12 inches
15 inches
Lifespan
10-20 years
10-15 years
Diet
Goldfish pellets, Vegetables, Flakes, Frozen foods, Live foods
Cichlid pellets, Frozen foods, Live foods, Shrimp, Bloodworms, Vegetable matter
Comet Goldfish
✓ Good For
- Community tanks
- Beginners
Jack Dempsey
✓ Good For
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