Can Apple Snail and Indonesian Datnoid (Tiger Fish) Live Together?

Apple Snail is a peaceful species (0/10), while Indonesian Datnoid (Tiger Fish) is moderately assertive (6/10). This notable difference means Indonesian Datnoid (Tiger Fish) may occasionally assert dominance over Apple Snail.

Large aggression gap (6 points) between Apple Snail and Indonesian Datnoid (Tiger Fish) increases stress risk for the more peaceful fish.

Apple Snail and Indonesian Datnoid (Tiger Fish) 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. Aggressive eaters may outcompete shy fish for food, leading to malnutrition.

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.

The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

Both fish can tolerate a pH between 7.2 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 8–15 dGH. Regular testing will ensure conditions stay within this range.

To house Apple Snail and Indonesian Datnoid (Tiger Fish) together, plan for an aquarium of at least 680 litres with a minimum length of 180 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

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), Shells (Breeding/Hiding), Driftwood (Digestion/Hiding), Plants - Densely covered. Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Apple Snail is a plant destroyer, which conflicts with Indonesian Datnoid (Tiger Fish)'s requirement for live plants. Compromise where possible or prioritise the more critical need.

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

This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. Apple Snail and Indonesian Datnoid (Tiger Fish) need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.

Feeding time deserves special attention with this pairing. Apple Snail is an aggressive eater that may prevent Indonesian Datnoid (Tiger Fish) from getting enough food.

Because Apple Snail is a fast, competitive feeder, consider using sinking pellets or feeding at opposite ends of the setup to ensure Indonesian Datnoid (Tiger Fish) receives an adequate share.