FishExpert care100g minimum

Copperband butterflyfish reef compatibility check

Chelmon rostratus

Expert-only fish that should not be bought as a beginner pest-control shortcut.

Minimum tank

100 gallons

Care level

Expert

Reef safety

Caution

Bioload score

2.3

Stocking stage

Middle

Flow need

Varied

Light need

None

Compatibility warnings

Difficult feeder.
May nip some invertebrates and corals.
Check adult size against the final tank, not the fish or coral at purchase size.
Add livestock slowly so the bioload and nutrient export can keep up.
Use the planner when this animal changes the tank-size, flow, lighting, or stocking plan.

Tank minimum

100 gallons

ReefCrafter uses 100 gallons as the planning floor for adult size, swimming room, nutrient load, and aggression margin.

Maturity gate

6 months

This animal should wait until the tank has enough age, food web stability, or parameter history.