Many different species of decapods look for refuge near or within the tentacles of this anemone, especially shrimp in the families Hippolytidae and Pandalidae.
 Hippolytid shrimp found in association with C. fernaldi include the Candy Striped Shrimp (Lebbeus grandimanus), Lebbeus groenlandicus and Eualus suckleyi; Pandalid shrimp found in association with this anemone include Pandalus tridens.
Two crabs that are occasionally found in association with C. fernaldi are the lithodid crabs Phyllolithodes papillosus and Placetron wosnessenskii.
Many different species of decapods look for refuge near or within the tentacles of this anemone, especially shrimp in the families Hippolytidae and Pandalidae.  Hippolytid shrimp found in association with C. fernaldi include the Candy Striped Shrimp (Lebbeus grandimanus), Lebbeus groenlandicus and Eualus suckleyi; Pandalid shrimp found in association with this anemone include Pandalus tridens. Two crabs that are occasionally found in association with C. fernaldi are the lithodid crabs Phyllolithodes papillosus and Placetron wosnessenskii.
Cribrinopsis fernaldi