sparganum
Pompeii worm
genus Echinococcus
sichel
microstomatid
cyclophyllidean
echinococciasis
Siamese fighting fish
dobson
hellgrammiate
pectinariid
pseudophyllidean
hillstream loach
oblique-swimming triplefin
parabrotulid
genus Polycirrus
garpike
sergeant baker
sergeant major
Polycirrus
diphyllobothriasis
bab
actynopterigian
herring
fly
notothenioid
worm genus
endoparasite
callipurbeckiid
Sheridan's threadfin
ctenocheyid
phylum Aschelminthes
genus Branchiobdella
myxozoa
filarial
kentrogon
sipunculan
Nematoda
arenicolid
Branchiobdella
Aschelminthes
Microdesmidae
cyclophyllid
family Microdesmidae
spherosporid
giant water bug
amphitrite
phylum Nematoda
pseudochromid
chub mackerel