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