Common Rudd and Similar Species
Scardinius erythrophthalmus
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Open the appSeveral fish can be confused with Common Rudd. Here are the key differences.
Species often confused with {name}
Roach
Rutilus rutilus
Key differences: The Roach has a more terminal or subterminal mouth, not distinctly upturned. Its dorsal fin originates directly above or slightly in front of the pelvic fins. While its fins can be reddish, they are generally duller than the Rudd's, and the pectoral and pelvic fins are often greyish or orange-tinged rather than bright red. The eye of the Roach is typically orange, not reddish-orange like the Rudd.
Hybrid Rudd x Roach
Scardinius erythrophthalmus x Rutilus rutilus
Key differences: Hybrids often exhibit intermediate characteristics, making identification challenging. They may have a slightly upturned mouth but not as pronounced as a pure Rudd, and fin coloration might be a mix of the two species, often a duller orange-red. The dorsal fin origin might be ambiguous, falling between the two parent species.
Golden Rudd
Scardinius erythrophthalmus var. auratus
Key differences: This is a cultivated ornamental variety of the Common Rudd, distinguished by its entirely golden or orange body coloration, often with darker patches. Morphologically, it is identical to the wild Common Rudd, differing only in pigmentation due to selective breeding.
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