How do urchins compare to snails and crabs for algae? Do they act more like crabs or like snails?
Reason: buying a harlequin tusk and am expecting most (if not all) my snails and crabs to go.
Bonus question: are nassarius snails safe from harlequin tusks?
Reason: buying a harlequin tusk and am expecting most (if not all) my snails and crabs to go.
Bonus question: are nassarius snails safe from harlequin tusks?