Mediterranean Sand Smelt and Similar Species
Atherina hepsetus
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Open the appSeveral fish can be confused with Mediterranean Sand Smelt. Here are the key differences.
Species often confused with {name}
Common Smelt
Osmerus eperlanus
Key differences: The Common Smelt (Osmerus eperlanus) belongs to a different family (Osmeridae) and is primarily found in temperate and cold waters of the North Atlantic and Baltic Sea, often entering freshwater. It has an adipose fin (a small, fleshy fin between the dorsal and caudal fins), which Atherina hepsetus lacks. Osmerus eperlanus also typically has a more pronounced cucumber-like smell.
Small-scale Sand Smelt
Atherina boyeri
Key differences: Atherina boyeri (Small-scale Sand Smelt) is very similar but generally smaller, reaching a maximum length of about 10-12 cm. The most reliable distinguishing feature is the number of scales along the lateral line (A. hepsetus typically has 58-65 scales, while A. boyeri has 42-52) and the number of rays in the second dorsal fin (A. hepsetus usually has 9-12, A. boyeri 10-13). A. hepsetus also tends to have a more pointed snout.
Lagoon Sand Smelt
Atherina lagunae
Key differences: Atherina lagunae is a recently described species, often confused with A. boyeri and A. hepsetus. It is typically found in brackish lagoons and estuaries. Differentiation often requires detailed meristic counts (e.g., vertebral count, scale count) and genetic analysis. Morphologically, it can be very difficult to distinguish from A. boyeri without expert examination.
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