Dorosoma petenense

Dorosoma petenense
Threadfin Shad – Dorosoma petenense
FamilyScientific NameAuthorYearCommon Name
ClupeidaeDorosoma petenense(G√ľnther)1867Threadfin Shad

Dorosoma petenenese

Unique Characters: Last ray of dorsal fin elongated. Usually 17-27 anal fin rays and 40-48 lateral scales. Terminal mouth. Small dark spot on shoulder. No notch in upper jaw. Fins tend to be yellow.

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

Similar Species:  

Gizzard Shad
Dorosoma cepedianum

Dorosoma cepedianum
Gizzard Shad – Dorosoma cepedianum

Gizzard Shad Dorosoma cepedianum. Last ray of dorsal fin elongated. Usually 25-37 anal fin rays and 52-70 lateral scales. Blunt snout with subterminal mouth. Large purple-blue spot on shoulder. Deep notch at center of upper jaw.

Mooneye
Hiodon tergisus

Hiodon tergisus
Mooneye – Hiodon tergisus
Photo Credit: NANFA

Mooneye Hiodon tergisus. Lateral line present. Breast without a sawtooth margin.  Anal fin origin under dorsal fin origin. Found only in the lower French Broad River in Madison County.

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