Fish. Smoke and dry fish, caviar, taramosalata, salt herring, Polish style herring, sprat in oil and in tomato sauce, saira, calamaris and much more:

Hot and cold smoking fish:

mackerel
salmon
sturgeon
smocked halibut
trout

Stockfish:

vobla
balyk
roach
pike
bream
gobies

Other seafood:
Squids

Caviar:

4 types of red caviar
teramosalatu (carp roe made by in Greece)

Herring:

salt herring Bochkovaya
Herring in oil (6 species, Latvian, Polish)
Herring in vinegar sauce (Polish)

Big variety of Canned fish (German, Russian, Latvian):

sprats (4 species)
sprat (2 species)
gobies
catfish
squid
cod liver