Molly Housing tools: what they help with
These calculators size your molly's living space: the minimum and recommended dimensions, how much bedding or substrate to buy and what fits in the space you have. Too little space is one of the most common welfare problems in pets. The right size gives a molly room to move, rest and behave normally.
What to know about housing and enclosure size for mollies
Mollies are livebearers that prefer harder, slightly alkaline water and often do noticeably better with a little aquarium salt. They grow larger than guppies and need at least 75 liters.
Molly quick facts
| Measure | Molly |
|---|---|
| Typical lifespan | 3–5 years |
| Diet | Omnivore |
| Mature at | About 6 months |
| Clutch size | 40–100 eggs |
A practical tip
Treat the minimum as the floor, not the goal. Bigger is almost always better, especially for active or social species.
Other molly topics
Molly care rarely sits in one box. You may also find these useful: molly age tools, molly behavior tools, molly breeding tools and molly cost tools. Or see every molly tool in one place.
Housing tools for other pets
The same kind of tool exists for other species, each using that animal's own reference data: goldfish housing, betta fish housing, guppy housing and tetra housing.