Can a Longspine Urchin, Black Live With a Scarlet Hermit Crab?
~ Possible with cautionVerdict from our compatibility engine, assuming a typical 90-gallon reef tank. Score: 67/100.
Why
- Known conflict: Large hermit crabs (Dardanus) kill snails for their shells and prey on small inverts
It can work if…
- Known incompatibility — these species are documented to conflict
Both species at a glance
Longspine Urchin, Black
Diadema setosum
- Aggression:
- peaceful
- Min tank:
- 10 gallons
- Reef safe:
- safe
- Diet:
- herbivore
Scarlet Hermit Crab
Dardanus megistos
- Aggression:
- peaceful
- Min tank:
- 20 gallons
- Reef safe:
- safe
- Diet:
- omnivore