California Grunion and Similar Species
Leuresthes tenuis
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Open the appSeveral fish can be confused with California Grunion. Here are the key differences.
Species often confused with {name}
Gulf Grunion
Leuresthes sardina
Key differences: The Gulf Grunion is found in the Gulf of California and is morphologically very similar to L. tenuis. The primary distinguishing feature is geographic distribution. L. sardina also spawns during the day, unlike L. tenuis which spawns at night.
Jacksmelt
Atherinopsis californiensis
Key differences: Jacksmelt are generally larger (up to 45 cm or 18 inches), have a more robust body, and their two dorsal fins are closer together. They also lack the distinct iridescent lateral stripe of the Grunion.
Topsmelt
Atherinops affinis
Key differences: Topsmelt are typically smaller than Jacksmelt but can be similar in size to Grunion. They have a more compressed body and their dorsal fins are also closer together than in Grunion. Their lateral stripe is less pronounced and often yellowish.
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