Can Swordtail Live With Pygmy Corydoras?
Swordtail and Pygmy Corydoras are not compatible due to size mismatch or behavioral conflicts.
Parameter Comparison
| Parameter | Swordtail | Pygmy Corydoras | Overlap |
|---|---|---|---|
| Temperature | 72–82°F | 72–79°F | 72–79°F ✓ |
| pH Range | 7–8.4 | 6–7.5 | 7–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 5.5" | 1" | Size mismatch ✗ |
| Min Tank Size | 20 gal | 10 gal | 20 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | beginner | beginner | — |
Species Profiles
Swordtail
Xiphophorus hellerii
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 →Pygmy Corydoras
Corydoras pygmaeus
Pygmy corydoras are tiny, adorable catfish that max out at just 1 inch. Unlike other corys that stay on the bottom, pygmy corys are unique in that they frequently swim in the mid-water column, hovering in groups like tiny helicopters. They are perfect for nano tanks and shrimp tanks, and their micro-schooling behavior is endlessly entertaining.
Full care guide →