CheckMyFishTank

Pearl Danio care

Danio albolineatus · Freshwater · Beginner level care

Pearl Danio, painted illustration

A shimmering, fast schooling danio.

Smallest tank20 gallons
Adult size2.5 inches
Temperature68 to 77°F
pH6.5 to 7.5
GroupA group of 8 or more
TemperamentPeaceful
SwimsTop of the tank
Lives3 to 5 years
Watch for: They are very active and jumpy, so keep the lid on.

Feeding

Twice a day. A small pinch they finish in about 2 minutes. Flakes, small pellets, frozen foods.

Jumps. Keep a tight lid on the tank.

Good tank mates

Fish that pass every check with Pearl Danio in a 40 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.

Black Neon TetraBlack Phantom TetraBlack Ruby BarbBlack Skirt TetraBoesemani RainbowfishBrilliant RasboraBristlenose PlecoBronze CorydorasBuenos Aires TetraCherry Barb

Do not mix with

  • Tinfoil Barb: Tinfoil Barb grows big enough to eat Pearl Danio.
  • German Blue Ram: German Blue Ram and Pearl Danio need different water temperatures.
  • Discus: Discus and Pearl Danio need different water temperatures.
  • Convict Cichlid: Convict Cichlid is aggressive and will bully peaceful Pearl Danio.
  • Oscar: Oscar grows big enough to eat Pearl Danio.
  • Jack Dempsey: Jack Dempsey grows big enough to eat Pearl Danio.
  • Severum: Severum grows big enough to eat Pearl Danio.
  • Green Terror: Green Terror grows big enough to eat Pearl Danio.

Questions

What size tank does a Pearl Danio need?

At least 20 gallons for a group of 8. Adults grow to about 2.5 inches, so plan for the adult size, not the size at the store.

What temperature does a Pearl Danio like?

68 to 77 degrees Fahrenheit, with a pH of about 6.5 to 7.5. A steady temperature matters more than hitting one exact number.

How many Pearl Danio should I keep together?

Keep 8 or more. They feel safe in a group and show better color and behavior.

What do Pearl Danio eat?

Flakes, small pellets, frozen foods. Feed twice a day: a small pinch they finish in about 2 minutes.

Sources

Checked against these sources on 2026-11-10. When sources disagree we use the safer number.