What size tank does Pearl Danio need?

Pearl Danio needs at least 20 gallons before tank mates or bioload are added; larger groups and active fish need more room.

What water parameters does Pearl Danio need?

Keep Pearl Danio at 68-78F, pH 6.5-7.5, GH 5-18 dGH, and KH 2-10 dKH.

Is Pearl Danio good for beginners?

Pearl Danio is rated beginner for beginners. Match its tank size, water parameters, and temperament before choosing tank mates.

What do Pearl Danio eat?

Pearl Danio diet is listed as omnivore. Feed a varied aquarium diet suited to that category.

How many Pearl Danio should be kept together?

Keep at least 6 Pearl Danio together. Social behavior: schooling.

Can Pearl Danio live with shrimp?

Sometimes. Pearl Danio is marked caution with shrimp, so adults may work with cover but shrimplets can be eaten.

Can Pearl Danio live with bettas?

Sometimes. Pearl Danio and Betta need at least 20 gallons, with normal group sizes handled. Pearl Danio can nip flowing fins on Betta.

Pearl Danio

Danio albolineatus compatibility profile. Find the best tank mates by checking water parameters, aquarium swim zone pressure, social rules, and shrimp-safe verifications.

Core facts & bioload limits

Adult size2.5"

Minimum tank20 gal

Temperamentpeaceful

Group6+

temperature68-78F
pH6.5-7.5
water_hardnessGH 5-18 dGH | KH 2-10 dKH
plant_safetysafe
shrimp_safetycaution
algae_eating_rolenone
beginner_suitabilitybeginner

Planning tools

Fish Compatibility CheckerCheck Pearl Danio against a selected tank mate.Aquarium Stocking CalculatorEstimate Pearl Danio bioload and group-size pressure.Water Parameter MatcherCompare Pearl Danio with your temperature, pH, GH, and KH.

Species resources

Pearl Danio water parameters

Community planning & swim zone pressure

When planning a community around Pearl Danio, consider the aquarium swim zone pressure. This species primarily occupies the topmiddle zone. Balance the setup by choosing tank mates that occupy the top or bottom zones to reduce crowding and stress.

2026 smart aquarium and aquascape planning for Pearl Danio

Minimum tank footprint for adult Pearl Danio

Pearl Danio needs at least 20 gallons before tank mates, decor displacement, or group-size pressure are added.

Why nano aquarium advice does not fit Pearl Danio

Aquascape style cannot compensate for a tank that is too small. Match the adult footprint, social group, and filtration first, then choose plants or hardscape.

Does Pearl Danio need programmable LED sunrise/sunset lighting?

Programmable sunrise and sunset ramps are optional, but gradual lighting can reduce startle behavior in tanks with open swimming lanes or skittish community fish.

Ideal smart heater temperature parameters for Pearl Danio breeding

Keep the heater inside the listed range of 68-78F; breeding attempts should favor stability over chasing the warmest possible number.

How high water flow from modern powerheads affects Pearl Danio

Match flow to swim zone and body shape. If Pearl Danio avoids open water, clamps fins, or hides behind hardscape, reduce direct current and add calmer feeding areas.

Best natural biotope tank mates for Pearl Danio

Favor tank mates with overlapping temperature, pH, hardness, temperament, and swim-zone use instead of mixing fish only because they share a broad region or store display tank.

Will Pearl Danio uproot carpet plants in a Dutch style aquascape?

Plant safety is marked as safe. Even plant-safe fish can disturb carpets if they dig, graze aggressively, or crowd the foreground during feeding.

Blackwater botanical setups for Pearl Danio stress relief

Use botanicals only when the softer, tinted-water style fits the species water range. Keep pH and hardness inside the listed limits instead of dropping them quickly for appearance.

Minimalist Iwagumi aquascape stocking ideas featuring Pearl Danio

Iwagumi layouts leave fewer visual barriers, so choose peaceful tank mates and avoid territorial species that need caves, dense stems, or broken sightlines.

Care caveats

notesActive schooling danio; pearly version of the zebra danio with the same swimming-room demands.
caveatKeep a group of 6 or more; without a group pearl danios stress and redirect activity onto tankmates.
caveatActive swimmer that needs real tank length, not just gallons — short or nano tanks waste their natural shoaling behavior.
caveatCan stress slow, shy, or long-finned tankmates with constant chasing; avoid pairing with bettas, gouramis, or fancy guppies.
caveatBest in mid-to-large planted community tanks with open swimming space and similarly active or unflappable tankmates.

Conditional tank mates

No green matches are currently published for this species. These yellow matches may work only when the warnings are handled, especially temperature range, group size, flow, and stocking density.