Can a Humu Picasso Triggerfish Live With a Pencil Urchin?
✗ Not recommended in most tanksVerdict from our compatibility engine, assuming a typical 90-gallon reef tank. Score: 0/100.
Why
- Size capacity hard block: Tank far too small (90gal for 300.0gal min)
- Reef safety hard block: Not reef-safe — Humu Picasso Triggerfish will damage coral/inverts
- Reef safety hard block: Not reef-safe — Pencil Urchin will damage coral/inverts
It can work if…
- Upgrade to a larger tank — this species needs more volume
- Tank is nearing capacity — consider removing a resident before adding this one
- Reef safety concern — relocate or rehome before adding to a reef tank
Both species at a glance
Humu Picasso Triggerfish
Rhinecanthus aculeatus
- Aggression:
- aggressive
- Min tank:
- 300 gallons
- Reef safe:
- unsafe
- Diet:
- carnivore
Pencil Urchin
Eucidaris tribuloides
- Aggression:
- peaceful
- Min tank:
- 30 gallons
- Reef safe:
- unsafe
- Diet:
- omnivore