Paraguay Tetra (Moenkhausia sanctaefilomenae)
Paraguay Tetra (Moenkhausia sanctaefilomenae) brings schooling movement with a clearly named colour or pattern to a suitably prepared aquarium. Plan its home around adult space, water, diet and social needs rather than the current sale size.
Quick Facts
- Scientific name: Moenkhausia sanctaefilomenae
- Product type: schooling freshwater fish
- Sale unit: One individual per quantity ordered unless the listing states otherwise
- Social needs: Social fish generally best kept in an appropriate group; fin-nipping potential varies by species
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FAQ
What is the ideal group size for Paraguay Tetras?
Paraguay Tetras are social fish and should be kept in groups of at least 6 to ensure natural behavior and reduce stress.
What water conditions do Paraguay Tetras prefer?
They thrive in warm, soft to moderately hard water with a pH between 6.0 and 7.0 and a temperature range of 22–28°C.
Are Paraguay Tetras prone to fin-nipping?
Fin-nipping potential varies by species and environment; they are generally mild but may display aggression in overcrowded or poorly maintained tanks.

Katherine King –
The Paraguay Tetras are active and colorful, adding a lively presence to my community tank. I kept them in a group of six and they swim together naturally. Water parameters were stable, and they seem healthy after two months.
Paul Cornish –
These fish are beautiful with a distinct pattern. I noticed they prefer to stay near the middle of the tank. I made sure to keep them in a group and avoid placing them with aggressive species.
Keith Lee –
Great addition to a freshwater setup. The schooling behavior is impressive and they adapt well to a well-maintained environment. Easy to care for with proper water conditions.