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<br />Barbels: absent <br />Pharyngeal teeth: <br />0,4-4,0 <br /> <br />Begin <br /> <br /> <br />Lateral-line <br />scales: <65 <br /> <br /> <br />Barbels: present <br />Pharyngeal teeth: <br />1, 1, 3-3, 1, 1 <br />Common Carp <br />(Cyprinus carpio) <br /> <br />Lateral-line <br />scales: >85 <br /> <br /> <br /> <br />Dorsal fin: upper edge straight or slightly concave <br />Caudal fin: deeply emarginate without spot at base <br />Peritoneum: blackish <br />Gill rakers: 35-52 <br />Goldfish (Carassius auratus) <br /> <br />Dorsal fin: upper edge convex <br />Caudal fin: slightly emarginate with blackish spot <br />at base (fades with growth) <br />Peritoneum: light <br />Gill rakers: 22-33 <br />Crucian Carp (Carassius carassius) <br /> <br />. <br /> <br />Sides: silvery, without blotches <br />Ventral keel: extends almost to junction of gills <br />Gill rakers on first arch: fused into sponge-like apparatus <br />Silver Carp (Hypophthalmichthys molitrix) <br /> <br />Barbels: absent <br />Keel: present <br /> <br /> <br />Sides: with small, irregular dark blotches <br />Ventral keel: extends to pelvic fin base <br />Gill rakers on first arch: slender, comblike, not fused <br />Bighead Carp (Hypophthalmichthys nobi/is) <br /> <br />Barbels: present <br />Keel: absent <br />Tench (Tinca tinca) <br /> <br />Lateral line <br />scales: 55-63 <br />Ide (Leuciscus idus <br /> <br /> <br />Keel: present <br />Rudd (Scardinius <br />erythrophthalmus) <br /> <br />Lateral-line <br />scales: <50 <br /> <br />Pored lateral-line scales: <12 <br />Bitterling (Rhodeus sericeus) <br /> <br />Pored lateral-line <br />scales: 35-45 <br /> <br /> <br />Abbreviated diagnostic key to foreign nonindigenous cyprinids of the United States. <br />Blue numbers refer to couplets in key. <br />Note: Not all diagnostic characters are included in this flow chart; refer to key (p. 7-13) and text for additional details. <br /> <br />Body color: olivaceous or silvery white, <br />fins dusky <br />Pharyngeal teeth: with elongate, <br />parallel grooves on grinding surfaces <br />Peritoneum: silvery with blackish <br />blotches <br />Grass Carp (Ctenopharyngodon idella) <br /> <br />Body color: dark brown or blue-gray, <br />fins dark <br />Pharyngeal teeth: massive, molar-like, <br />smooth (not serrated or grooved) <br />Peritoneum: black <br />Black Carp (Mylopharyngodon pice us) <br />