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Sciaenidae
Family, Bony fish (Actinopterygii), Marine
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Scomberesocidae – Sauries
Family, Bony fish (Actinopterygii), Marine
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Scombridae – Tunas and mackerels
Family, Bony fish (Actinopterygii), Marine
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Scopelarchidae – Pearleyes
Family, Bony fish (Actinopterygii), Marine
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Scophthalmidae
Family, Bony fish (Actinopterygii), Marine
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Scorpaenidae – Scorpionfishes
Family, Bony fish (Actinopterygii), Marine, terrestrial
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Scyliorhinidae – Catsharks
Family, Cartilagenous fish (Chondrichthyes), Marine
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Sebastidae
Family, Bony fish (Actinopterygii), Marine
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Serranidae
Family, Bony fish (Actinopterygii), Marine
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Serrivomeridae – Sawtooth eels
Family, Bony fish (Actinopterygii), Marine
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Siluridae
Family, Bony fish (Actinopterygii), Terrestrial
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Soleidae – Soles
Family, Bony fish (Actinopterygii), Marine
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Somniosidae
Family, Cartilagenous fish (Chondrichthyes), Marine
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Sparidae – Sea-breams
Family, Bony fish (Actinopterygii), Marine, terrestrial
Sea Bream
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Sphyrnidae
Family, Cartilagenous fish (Chondrichthyes), Marine
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Squalidae – Sleeper sharks
Family, Cartilagenous fish (Chondrichthyes), Marine
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Squatinidae
Family, Cartilagenous fish (Chondrichthyes), Marine
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Sternoptychidae – Hatchetfishes
Family, Bony fish (Actinopterygii), Marine
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Stichaeidae
Family, Bony fish (Actinopterygii), Marine
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Stomiidae – Barbeled dragonfishes
Family, Bony fish (Actinopterygii), Marine