Can Gardner's Killifish and Malaysian Trumpet Snail (MTS) Live Together?
Keeping Gardner's Killifish and Malaysian Trumpet Snail (MTS) together is possible but requires caution due to differing aggression levels and potential behavioral clashes. Provide a spacious tank of at least 46 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Behaviour & Temperament
Gardner's Killifish is a generally mild-mannered species (4/10), while Malaysian Trumpet Snail (MTS) is peaceful (0/10). This notable difference means Gardner's Killifish may occasionally assert dominance over Malaysian Trumpet Snail (MTS).
In terms of spatial distribution, Gardner's Killifish prefers the Top (Surface) and Middle (Open Water) zones, whereas Malaysian Trumpet Snail (MTS) occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.
Additional behavioural considerations to keep in mind: Shrimp eaters may also prey on very small nano fish.
Worth noting: Malaysian Trumpet Snail (MTS) is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Gardner's Killifish 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 20°C and 26°C. Aim for the midpoint of this range (around 23.0°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. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Gardner's Killifish and Malaysian Trumpet Snail (MTS) together, plan for an aquarium of at least 46 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: Plants - Densely covered, Plants - Floating, Plants - lighly covered, Sand (Sifters), Soil / Nutrient Rich. 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.
Find the right tank equipment
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Diet & Feeding
Feeding time deserves special attention with this pairing. Gardner's Killifish is a known shrimp eater and may prey on small invertebrates or nano fish like Malaysian Trumpet Snail (MTS).
Frequently Asked Questions
Can Gardner's Killifish and Malaysian Trumpet Snail (MTS) live together?▾
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 46 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do Gardner's Killifish and Malaysian Trumpet Snail (MTS) need?▾
A minimum of 46 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 Gardner's Killifish and Malaysian Trumpet Snail (MTS) together?▾
Keep the aquarium between 20°C and 26°C. A target of around 23.0°C sits comfortably within both species' preferred ranges.
Are Gardner's Killifish or Malaysian Trumpet Snail (MTS) aggressive?▾
Gardner's Killifish is generally mild-mannered (4/10) and Malaysian Trumpet Snail (MTS) is peaceful (0/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Gardner's Killifish and Malaysian Trumpet Snail (MTS) 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.
Does Malaysian Trumpet Snail (MTS) being nocturnal affect compatibility?▾
Malaysian Trumpet Snail (MTS) is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Malaysian Trumpet Snail (MTS) during evening hours.
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