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Blue Tang
Paracanthurus hepatus
The iconic "Dory" fish — a vibrant royal blue tang with a black palette marking and yellow tail. Demands large tanks with excellent water quality and strong flow.
Care Parameters
Adult size
25 cm
Min tank
300 L
Temperature
24–28°C
pH
8.1–8.4
GH
8–12 dGH
Diet
Herbivore
Temperament
Semi-aggressive
Water zone
All levels
Difficulty
Advanced
Schooling
Solitary or small groups.
Suitable Equipment
5
Common Problems
5T
Temperature Shock
Sudden temperature swings after water changes, heater failure or power cuts stress fish.
fishF
Fin Rot
Fins look frayed, ragged or are visibly shrinking with white or red edges.
fishH
High Ammonia Poisoning
Elevated ammonia levels cause burns, redness and rapid breathing.
waterD
Dropsy
Abdomen swells and scales stand out like a pinecone — usually a bacterial infection.
fishC
Cyanobacteria (Blue-Green Slime)
Slimy blue-green or dark purple patches with a foul odor.
water