Yellow-tail Acei
Pseudotropheus acei
Yellow-tail Acei (Pseudotropheus acei) — Varies care, Peaceful, under Other. Minimum tank in the app: 42 US gal min; aim for 75–82°F and pH 6.5–7.5. The Yellow-tail Acei is well-suited for intermediate aquarists seeking a visually striking and dynamic fish that brings activity to the mid-tank zone.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Africa
- Africa
Regional colours match the stocking calculator’s origin map.
Yellow-tail Acei Tank Setup
A minimum of 160 liters is essential, allowing ample swimming space while incorporating rocky formations and caves to serve as territories and hiding spots. Aim for moderate water flow to mimic their natural environment, using gravel or sand substrates that encourage foraging behaviors. Adequate lighting should be provided, though consider dimming during peak activity times to reduce stress.
What Do Yellow-tail Aceis Eat?
As an omnivore, the Yellow-tail Acei thrives on a varied diet. Feeding should be moderate; they can be competitive eaters, so ensure sufficient food distribution to prevent dominant individuals from monopolizing resources.
Yellow-tail Acei Tank Mates
Ideal tank mates include medium-sized, similarly semi-aggressive species that occupy different swimming levels, such as certain cichlids or larger tetras. Be cautious with smaller, more docile fish, as they may become targets for bullying. Intraspecies, a mix of males and females can reduce aggressive displays, but a higher ratio of females to males is preferable to minimize stress during breeding periods.
Are Yellow-tail Aceis Good for Beginners?
Care demand varies with setup and individual fish; use the numbers above as your baseline. Aquarists often underestimate the importance of tank size and structure, leading to excessive stress and aggression when fish feel cramped. neglecting water quality and parameters can exacerbate territorial disputes and health issues.
Building a community? Run the full list through the stocking calculator before you add anything else.
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