Fifteen-spined stickleback and Similar Species
Spinachia spinachia
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Open the appSeveral fish can be confused with Fifteen-spined stickleback. Here are the key differences.
Species often confused with {name}
Three-spined stickleback
Gasterosteus aculeatus
Key differences: Has 2-4 (typically 3) dorsal spines, a deeper body, and is primarily found in freshwater or anadromous populations. The Fifteen-spined stickleback has 14-16 spines and is exclusively marine.
Nine-spined stickleback
Pungitius pungitius
Key differences: Has 7-12 (typically 9) dorsal spines, a more slender body than the Three-spined but less elongated than the Fifteen-spined, and is found in freshwater and brackish environments. The Fifteen-spined stickleback has more spines and is strictly marine.
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