Compatibility Overview
Mystery Snail and Otocinclus can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 29-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Mystery Snail | Otocinclus | Verdict |
|---|---|---|---|
| Temperature | 68–80°F | 72–82°F | ✅ 72–80°F |
| pH Range | 7.0–8.0 | 6.0–7.5 | ⚠️ 7.0–7.5 (narrow) |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 2 in | 1.5 in | ✅ Similar |
| Min. Group | 1+ | 4+ | See below |
| Min. Tank Size | 29 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Mystery Snail — Pomacea bridgesii
Large, peaceful aquarium snails that graze on algae and detritus. Shell provides some protection but can be harassed by certain fish.
→ Full Mystery Snail care guide
Otocinclus — Otocinclus spp.
Tiny algae-eating catfish that are peaceful with all species. Need established algae growth and biofilm; sensitive to ammonia.
Frequently Asked Questions
Can Mystery Snail live with Otocinclus?
Yes, in a well-planned setup. Mystery Snail and Otocinclus can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 29-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Mystery Snail and Otocinclus together?
A minimum of 29 gallons is recommended for keeping Mystery Snail and Otocinclus together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Mystery Snail and Otocinclus?
72–80°F
Is a Mystery Snail aggressive toward a Otocinclus?
Mystery Snail is peaceful and Otocinclus is peaceful. Limited pH overlap (7.0–7.5) — maintain pH carefully within this narrow window.