Roe Allergy but not Fish Allergy
This Finnish study found that IgE-mediated allergy to fish roe is possible without fish allergy also being present.
They suggest that roe allergy be explored if individuals test negative to fish but are suspected of having a seafood-related allergy.
Severe reactions from roe without concomitant fish allergy.
Makinen-Kiljunen S, Kiistala R, Varjonen E.
Ann Allergy Asthma Immunol. 2003;91(4):413-6.