Can Royal Gramma Live With Hillstream Loach?
Incompatible pH. Royal Gramma needs 8.1–8.4, Hillstream Loach needs 6.5–7.5.
Parameter Comparison
| Parameter | Royal Gramma | Hillstream Loach | Overlap |
|---|---|---|---|
| Temperature | 75–80°F | 65–75°F | 75–75°F ✓ |
| pH Range | 8.1–8.4 | 6.5–7.5 | No overlap ✗ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 3" | 3" | Similar ✓ |
| Min Tank Size | 20 gal | 20 gal | 20 gal minimum together |
| Diet | Carnivore | Herbivore | — |
| Care Level | beginner | intermediate | — |
Species Profiles
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 →Hillstream Loach
Sewellia lineolata
Hillstream loaches are fascinating flat-bodied fish that resemble tiny stingrays. They are specialized for life in fast-flowing, oxygen-rich streams and use their modified pelvic and pectoral fins to grip smooth rocks in strong current. Their unique appearance, algae-eating habits, and cool-water preference make them popular with experienced fishkeepers looking for something different.
Full care guide →