Can Apistogramma elizabethae and Assassin Snail Live Together?

Apistogramma elizabethae is a moderately assertive species (5/10), while Assassin Snail is peaceful (2/10). This modest difference means Apistogramma elizabethae may occasionally assert dominance over Assassin Snail.

Apistogramma elizabethae and Assassin Snail both frequent the Bottom (Substrate) 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: Shrimp eaters may also prey on very small nano fish.

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.

The pH requirements of Apistogramma elizabethae (4–6.5) and Assassin Snail (7–8) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Apistogramma elizabethae needs 0–5 dGH while Assassin Snail requires 8–15 dGH.

To house Apistogramma elizabethae and Assassin Snail together, plan for an aquarium of at least 55 litres with a minimum length of 60 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

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: Sand (Sifters), Leaf Litter/Blackwater, Driftwood (Digestion/Hiding), Plants - Densely covered. 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.

Feeding time deserves special attention with this pairing. Apistogramma elizabethae is a known shrimp eater and may prey on small invertebrates or nano fish like Assassin Snail.