Can Japanese Ricefish (Medaka) and Ramshorn Snail Live Together?
Yes, Japanese Ricefish (Medaka) and Ramshorn Snail are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. A minimum tank size of 23 litres is recommended.
At a Glance
Behaviour & Temperament
Japanese Ricefish (Medaka) is a peaceful species (2/10), while Ramshorn Snail is peaceful (0/10). This modest difference means Japanese Ricefish (Medaka) may occasionally assert dominance over Ramshorn Snail.
Japanese Ricefish (Medaka) and Ramshorn Snail both frequent the Top (Surface) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.
Worth noting: Japanese Ricefish (Medaka) is a known jumper, so a tight-fitting lid is essential.
Water Parameters
The safe temperature window for both species falls between 15°C and 28°C. Aim for the midpoint of this range (around 21.5°C) for optimal comfort.
Both fish can tolerate a pH between 7 and 8.5. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 8–20 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Japanese Ricefish (Medaka) and Ramshorn Snail together, plan for an aquarium of at least 23 litres with a minimum length of 30 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.
Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.
Specific environmental needs for this combination include: Plants - Densely covered, Plants - Floating, Established Algae (Otocinclus). 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
Browse tanks, décor, and equipment suited for this setup.
Frequently Asked Questions
Can Japanese Ricefish (Medaka) and Ramshorn Snail live together?▾
Yes. Japanese Ricefish (Medaka) and Ramshorn Snail are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.
What size tank do Japanese Ricefish (Medaka) and Ramshorn Snail need?▾
A minimum of 23 litres (tank length at least 30 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 Japanese Ricefish (Medaka) and Ramshorn Snail together?▾
Keep the aquarium between 15°C and 28°C. A target of around 21.5°C sits comfortably within both species' preferred ranges.
Are Japanese Ricefish (Medaka) or Ramshorn Snail aggressive?▾
Japanese Ricefish (Medaka) is peaceful (2/10) and Ramshorn Snail is peaceful (0/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Japanese Ricefish (Medaka) and Ramshorn Snail need?▾
Both species overlap in the 7–8.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
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