Can Mystery Snail and Peacock Gudgeon Live Together?

🟡Possible with Caution

Keeping Mystery Snail and Peacock Gudgeon together is possible but requires caution due to potential behavioral clashes. Provide a spacious tank of at least 48 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Mystery Snail

Pomacea bridgesii

Peacock Gudgeon

Tateurndina ocellicauda

🐠Family Group
Mystery Snail
Invertebrates
Peacock Gudgeon
Gobies & Gudgeons
Temperament
Mystery Snail
Peaceful (0/10)
Peacock Gudgeon
Peaceful (2/10)
Temperature
✓ Compatible
Mystery Snail
20–28°C
Peacock Gudgeon
22–26°C
pH Range
✓ Compatible
Mystery Snail
7–8.5
Peacock Gudgeon
6.5–7.5
Hardness (dGH)
✓ Compatible
Mystery Snail
8–20
Peacock Gudgeon
5–10
Water Type
✓ Compatible
Mystery Snail
Freshwater Only
Peacock Gudgeon
Freshwater Only
Flow Preference
✓ Compatible
Mystery Snail
Low
Peacock Gudgeon
Low
Min Tank Volume
Combined: 48 L
Mystery Snail
19 L
Peacock Gudgeon
40 L
Swimming Level
Shared: 2 zones
Mystery Snail
BottomMiddleTop
Peacock Gudgeon
MiddleBottom
🏷️Behavior Tags
Mystery Snail
Jumper (Lid Required)Hyperactive / Fast Swimmer
Peacock Gudgeon
Nano / Bite-sized (Predation Risk)Shy / Slow Moving (Easily Stressed)Fry Predator

Behaviour & Temperament

Mystery Snail is a peaceful species (0/10), while Peacock Gudgeon is peaceful (2/10). This modest difference means Peacock Gudgeon may occasionally assert dominance over Mystery Snail.

Mystery Snail and Peacock Gudgeon both frequent the Bottom (Substrate) and Middle (Open Water) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.

Worth noting: Mystery Snail is a known jumper, so a tight-fitting lid is essential.

To improve the chances of a peaceful coexistence in this community tank: A larger aquarium with ample hiding spots can help diffuse aggression and give the less dominant fish space to retreat.

Water Parameters

The safe temperature window for both species falls between 22°C and 26°C. Aim for the midpoint of this range (around 24.0°C) for optimal comfort.

Both fish can tolerate a pH between 7 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 8–10 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Mystery Snail and Peacock Gudgeon together, plan for an aquarium of at least 48 litres with a minimum length of 45 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Established Algae (Otocinclus), Plants - Densely covered, Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.

Both species do well with low (still water) water movement, so a standard filtration setup rated for the tank volume should suffice.

Frequently Asked Questions

Can Mystery Snail and Peacock Gudgeon live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 48 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Mystery Snail and Peacock Gudgeon need?

A minimum of 48 litres (tank length at least 45 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.

What water temperature is best for Mystery Snail and Peacock Gudgeon together?

Keep the aquarium between 22°C and 26°C. A target of around 24.0°C sits comfortably within both species' preferred ranges.

Are Mystery Snail or Peacock Gudgeon aggressive?

Mystery Snail is peaceful (0/10) and Peacock Gudgeon is peaceful (2/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Mystery Snail and Peacock Gudgeon need?

Both species overlap in the 7–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.


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