H
Helfrichi Firefish
Nemateleotris helfrichi
VS
M
Molly
Poecilia sphenops
Choosing between Helfrichi Firefish and Molly? 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.
Helfrichi Firefish
Nemateleotris helfrichiVS
Molly
Poecilia sphenopsCommon Name
Helfrichi Firefish
Molly
Scientific Name
Nemateleotris helfrichi
Poecilia sphenops
Type
Saltwater / Marine
Freshwater
Difficulty
Intermediate
Beginner Friendly
Temperament
Peaceful
Peaceful
Minimum Tank
20 gallons
20 gallons
Recommended Tank
30 gallons
30 gallons
Temperature
72°F - 78°F
75°F - 82°F
pH Range
8.1 - 8.4
7.5 - 8.5
Max Size
2.5 inches
4.5 inches
Lifespan
3-5 years
3-5 years
Diet
Frozen Mysis shrimp, Frozen brine shrimp, Marine pellets, Copepods
High-quality vegetable-based flake food, Algae wafers, Spirulina, Blanched vegetables, Frozen daphnia, Bloodworms
Helfrichi Firefish
✓ Good For
- Community tanks
Molly
✓ Good For
- Community tanks
- Beginners
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