How related are they?
Same genus, Dascyllus (humbugs and dominos): very close cousins
They split at the species level: the Two Stripe Damselfish belongs to Dascyllus reticulatus (Two Stripe Damselfish), the Domino Damselfish to Dascyllus trimaculatus (Domino Damselfish).
Find the Two Stripe Damselfish on the tree · Find the Domino Damselfish 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 | Two Stripe Damselfish | Domino Damselfish |
|---|---|---|
| Kingdom | Animalia Animals | |
| Phylum | Chordata Chordates | |
| Subphylum | Vertebrata Vertebrates | |
| Infraphylum | Gnathostomata jawed vertebrates | |
| Parvphylum | Osteichthyes bony fishes | |
| Gigaclass | Actinopterygii ray-finned fishes | |
| Superclass | Actinopteri | |
| Class | Teleostei Teleost fishes | |
| Order | Ovalentaria (unplaced) Unplaced ovalentarian fishes | |
| Family | Pomacentridae Damselfishes and clownfishes | |
| Genus | Dascyllus humbugs and dominos | |
| Species split | Dascyllus reticulatus Two Stripe Damselfish | Dascyllus trimaculatus Domino Damselfish |
Care, side by side
| Fact | Two Stripe Damselfish | Domino Damselfish |
|---|---|---|
| Type | Fish · Damselfish | Fish · Damselfish |
| Care level | Easy | Easy |
| Reef safe | Yes | Yes |
| Temperament | Aggressive | Aggressive |
| Diet | Omnivore | Omnivore |
| Favorite foods | Frozen mysis shrimp, Small marine pellets, Flake foods | Frozen mysis shrimp, Frozen brine shrimp, Marine flakes and pellets |
| Max size | 3.5 in (9 cm) | 5.5 in (14 cm) |
| Minimum tank | 30 gal | 75 gal |
| Temperature | 72–78 °F | 72–78 °F |
| Salinity (SG) | 1.020–1.025 | 1.020–1.025 |
| pH | 8.1–8.4 | 8.1–8.4 |
| Lifespan | No published lifespan figure was found in the sources checked. | No published lifespan figure was found in the sources checked. FishBase rates the species as highly resilient, with a minimum population doubling time under 15 months. |
| Breeding | Hard | Hard |
| Conservation (IUCN) | Least Concern | Least Concern |