Choosing X Ray Tetra Tank Mates
Good X Ray Tetra tank mates share the same temperature and pH window, will not be eaten by (or eat) the X Ray Tetra, and do not compete for the same swimming zone or feeding time. Each pair guide below scores those factors from 0 to 100 and gives the minimum tank size for keeping both species together.
Start with the highest-scoring pairs; anything under 45 is listed so you know what to avoid, not as a recommendation.
Care baseline
The Pristella maxillaris, also known as the X-Ray Tetra, is a popular freshwater fish known for its unique appearance and peaceful nature. They are slender and iridescent, with a clear, almost x-ray-like body. They are best kept in groups of 6 or more and thrive in well-planted tanks with a moderate water flow.
| Temperature | 72–82°F |
| pH | 6.0–7.5 |
| Adult size | 1.8 in |
| Minimum group | 6 |