Blue Threadfin Salmon and Similar Species
Eleutheronema tetradactylum
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Open the appSeveral fish can be confused with Blue Threadfin Salmon. Here are the key differences.
Species often confused with {name}
Blackspot Threadfin
Eleutheronema rhadinum
Key differences: E. rhadinum typically has 5 free pectoral fin rays (vs. 4 in E. tetradactylum) and a prominent black spot at the base of the pectoral fin, which is absent in E. tetradactylum. E. rhadinum also generally has a more slender body.
Common Threadfin
Polynemus paradiseus
Key differences: P. paradiseus has 7 free pectoral fin rays, which are extremely long, often exceeding the body length. Its body is also generally more compressed and has a more yellowish hue.
Giant African Threadfin
Polydactylus quadrifilis
Key differences: P. quadrifilis is an Atlantic species, geographically separated. It also has 4 free pectoral fin rays but differs in fin ray counts, body proportions, and overall size (can grow much larger).
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