Blue-lined Triggerfish and Similar Species
Xanthichthys caeruleolineatus
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Open the appSeveral fish can be confused with Blue-lined Triggerfish. Here are the key differences.
Species often confused with {name}
Crosshatch Triggerfish
Xanthichthys mento
Key differences: X. mento has a distinct 'crosshatch' pattern of dark lines on its body, particularly in males, and lacks the prominent horizontal blue lines of X. caeruleolineatus. Its caudal fin is also more deeply lunate and often has red or orange coloration.
Scribbled Triggerfish
Xanthichthys auromarginatus
Key differences: X. auromarginatus typically has a more uniform body coloration, often grayish-blue, with a yellow or orange margin on the caudal fin. It lacks the distinct blue horizontal lines on the body and head.
Gilded Triggerfish
Xanthichthys ringens
Key differences: X. ringens has a more muted coloration, often with a series of faint, oblique lines or spots, and lacks the prominent iridescent blue horizontal lines. Its caudal fin is less deeply lunate.
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