This matrix is a simplified guide based on typical behavior and sizes. Always check temperature, pH, footprint, and individual fish temperament before mixing species.
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- Compatible — Often kept together with attention to tank size and group sizes.
- Caution — Possible with a large aquarium, hiding places, or experience; watch fin-nipping, temperament, or size gaps.
- Not recommended — High risk of aggression, predation, or chronic stress — choose other tank mates.