Dorosoma petenense

Dorosoma petenense
Threadfin Shad – Dorosoma petenense
FamilyScientific NameAuthorYearCommon Name
ClupeidaeDorosoma petenense(Gu╠łnther)1867Threadfin Shad

Dorosoma petenense

Unique Characters: Last dorsal-fin ray filamentous. Caudal fin golden yellow. No dark stripes on sides. Mouth terminal (snout more pointed and not extending anterior to upper jaw). Anal-fin rays 25 or fewer. Fewer than 50 (41-48) scales in lateral series. Upper jaw with deep median notch.

Threadfin Shad vs Atlantic Thread Herring
Threadfin Shad vs Atlantic Thread Herring – Rob Aguilar, Smithsonian Environmental Research Center

Similar Species: Gizzard Shad Dorosoma cepedianum. Last dorsal-fin ray filamentous. Body silver to brassy with 6-8 dark stripes on upper side. Mouth subterminal (snout bulbous and fleshy, projecting past upper jaw). Anal-fin rays 25 or more. More than 50 (52-70) scales in lateral series. Upper jaw with deep median notch.

Dorosoma cepedianum
Gizzard Shad – Dorosoma cepedianum

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