Can Pea Puffer Live With Swordtail?
❌Not Compatible
Pea Puffer is aggressive and will likely attack or stress tank mates.
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Parameter Comparison
| Parameter | Pea Puffer | Swordtail | Overlap |
|---|---|---|---|
| Temperature | 74–82°F | 72–82°F | 74–82°F ✓ |
| pH Range | 7–8 | 7–8.4 | 7–8 ✓ |
| Temperament | aggressive | peaceful | Aggression risk ✗ |
| Max Size | 1" | 5.5" | Size mismatch ✗ |
| Min Tank Size | 5 gal | 20 gal | 20 gal minimum together |
| Diet | Carnivore | Omnivore | — |
| Care Level | intermediate | beginner | — |
Species Profiles
Pea Puffer
Carinotetraodon travancoricus
intermediateaggressive5+ gal
Pea puffers are the smallest freshwater pufferfish in the world, growing to just 1 inch. Despite their tiny size, they have big personalities — they are curious, intelligent, and surprisingly aggressive. They are best kept in species-only tanks and require live or frozen food.
Full care guide →Swordtail
Xiphophorus hellerii
beginnerpeaceful20+ gal
Swordtails are hardy, colorful livebearers named for the distinctive elongated lower tail fin (the 'sword') found on males. They come in many color varieties including red, pineapple, marigold, and tuxedo. Larger than guppies but just as easy to care for, swordtails are excellent community fish that prefer hard, alkaline water.
Full care guide →Other Compatible Tank Mates
For Pea Puffer:
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