Celestial Pearl Danio (Danio margaritatus) is a beginner-level freshwater fish that needs at least 10 gallons and 73-79°F. Also called the galaxy rasbora. Males show spangled orange fins and females are plumper and paler. Peaceful and small, but shy until they feel secure.
Care facts at a glance
| Scientific name | Danio margaritatus |
|---|---|
| Family | Danionidae |
| Origin | Myanmar |
| Adult size | 1 in |
| Minimum tank | 10 gallons |
| Temperature | 73-79°F |
| pH | 6.5-7.5 |
| Temperament | Peaceful |
| Social behavior | Groups, keep 6+ |
| Swim level | Mid to upper |
| Difficulty | Beginner |
| Diet | Micro pellets, flakes, frozen foods |
| Typical lifespan | 3-5 years |
Quick tips
- Plants and floating cover help them settle in.
- Keep a group with a good mix of males and females.
San Diego water
Captive-bred stock usually adapts to San Diego tap water with slow acclimation. For best color and health, many keepers blend tap with RO/DI water. Learn the numbers in our San Diego tap water guide.
Before you buy
Make sure your tank is cycled (how to cycle a tank), check your numbers with the water testing guide, and use the compatibility guide to check tankmates. These are general ranges; individual fish and local water vary.
Find it at Pet Zone
Pet Zone Tropical Fish is a San Diego aquarium store with two locations. Stock changes daily, so call ahead if you are after a specific species or plant. Shop online at petzonesd.com.
4160 Convoy St, San Diego, CA 92111
(858) 987-0309
Open daily, 10am-6pm
Aquascaping, planted tanks
4266 University Ave, San Diego, CA 92105
(619) 283-1812
Closed Monday; Tue-Fri 10:30am-6pm, Sat 11am-6pm, Sun 11am-4pm
Monster fish, koi