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requins bleus
ichtyol.	blue sharks (Carcharhinidae); gray sharks (Carcharhinidae); requiem sharks (Carcharhinidae); typical sharks (Carcharhinidae)
requin bleu
gen.	blue shark
fish.farm.	blue whaler (Carcharhinus glaucus, Carcharias glaucus, Prionace glauca, Squalus glaucus); great blue shark (Carcharhinus glaucus, Carcharias glaucus, Prionace glauca, Squalus glaucus)
ichtyol.	blue dog (Prionace glauca); blue shark (Prionace glauca); blue whaler (Prionace glauca); great blue shark (Prionace glauca)
nat.res., fish.farm.	blue shark (Carcharhinus glaucus, Carcharias glaucus, Prionace glauca, Squalus glaucus)
zool.	blue shark (Prionace glauca, Carcharias glaucus); blue whaler (Prionace glauca, Carcharias glaucus)
French thesaurus
requin bleu
fish.farm.	modra ajkula (Prionace glauca)

requins bleus: 21 phrases in 4 subjects

Ichthyology	12
Life sciences	3
Natural resourses and wildlife conservation	5
Natural sciences	1