Can Swordtail Live With Royal Gramma?
Cannot coexist — Swordtail is freshwater, Royal Gramma is saltwater.
Parameter Comparison
| Parameter | Swordtail | Royal Gramma | Overlap |
|---|---|---|---|
| Temperature | 72–82°F | 75–80°F | 75–80°F ✓ |
| pH Range | 7–8.4 | 8.1–8.4 | 8.1–8.4 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 5.5" | 3" | Similar ✓ |
| Min Tank Size | 20 gal | 20 gal | 20 gal minimum together |
| Diet | Omnivore | Carnivore | — |
| 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 →Royal Gramma
Gramma loreto
The royal gramma is one of the most stunning and beginner-friendly saltwater fish. Its front half is vivid purple transitioning to bright yellow on the back — a color combination unmatched in the marine world. They are hardy, disease-resistant, reef-safe, and stay small. Often considered one of the top 3 beginner saltwater fish alongside clownfish and firefish.
Full care guide →