Can Molly Live With Mystery Snail?
Maybe, with caveats -- mystery snails and mollies share compatible water ranges, but mollies may knock snails off surfaces while grazing.
Why
- Mollies reach 4 to 5 inches and are active grazers that may disturb mystery snails on surfaces.
- Mystery snails have large shells and a hook foot, so most mollies leave them alone, but occasional bumping happens.
- Both species tolerate temperatures from 72-82F and pH from 7.0-8.0, making shared water straightforward.
- A 20-gallon tank gives snails enough bottom space and mollies enough swimming room to coexist without constant contact.
What could go wrong
Mollies may knock mystery snails off glass or decor while foraging, causing the snail to fall and potentially get injured.
Gear for a shared tank
Sized for the 20 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.
AquaClear 30 Power Filter
Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 20 gallon minimum.
Eheim Jager 150W Thermostat Heater
Holds a steady temperature inside the 72-82°F window both species need.
API Freshwater Master Test Kit
Keep ammonia, nitrite, and nitrate in check. Two-species tanks have more bioload and less margin for error than single-species setups.
Better pairings to consider
If mollies prove too disruptive, mystery snails do well with corydoras or bristlenose plecos.
Related compatibility questions
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