How related are they?
Same genus, Fimbriaphyllia (Hammer and frogspawn corals): very close cousins
They split at the species level: the Hammer Coral belongs to Fimbriaphyllia ancora (Hammer Coral), the Frogspawn Coral to Fimbriaphyllia divisa (Frogspawn Coral).
Find the Hammer Coral on the tree · Find the Frogspawn Coral on the tree
Family lines, side by side
Highlighted rows are groups both animals belong to. The marked row is where their lines go separate ways.
| Rank | Hammer Coral | Frogspawn Coral |
|---|---|---|
| Kingdom | Animalia Animals | |
| Phylum | Cnidaria Cnidarians | |
| Subphylum | Anthozoa Corals and sea anemones | |
| Class | Hexacorallia Hexacorals | |
| Order | Scleractinia Stony corals | |
| Suborder | Refertina Complex corals | |
| Family | Euphylliidae Euphylliid corals | |
| Genus | Fimbriaphyllia Hammer and frogspawn corals | |
| Species split | Fimbriaphyllia ancora Hammer Coral | Fimbriaphyllia divisa Frogspawn Coral |
Care, side by side
| Fact | Hammer Coral | Frogspawn Coral |
|---|---|---|
| Type | Coral · LPS coral | Coral · LPS coral |
| Care level | Moderate | Moderate |
| Reef safe | With caution | With caution |
| Temperament | Aggressive | Aggressive |
| Diet | Photosynthetic | Photosynthetic |
| Favorite foods | Mysis shrimp, Brine shrimp, Fine coral foods such as Reef Roids | Microplankton, Brine shrimp, Mysis shrimp |
| Max size | 31.5 in (80 cm) | 10 in (25.4 cm) |
| Minimum tank | 30 gal | 55 gal |
| Temperature | 75–78 °F | 75–78 °F |
| Salinity (SG) | 1.024–1.026 | 1.024–1.026 |
| pH | 8.1–8.4 | 8.1–8.4 |
| Nitrate | 5–15 ppm | 5–15 ppm |
| Lifespan | No fixed lifespan: colonies keep growing by budding and splitting heads and can persist for many years in a stable aquarium. Single heads can be lost to stress (polyp bailout) while the rest of the colony lives on. | No fixed lifespan: colonies grow by budding and can persist for many years in a stable aquarium. Stressed colonies may lose heads through polyp bailout while the rest survives. |
| Breeding | Moderate | Moderate |
| Conservation (IUCN) | Least Concern | Least Concern |