What White Marlin bill measurement distinguishes it from Makaira species?
Answer
The bill length is often shorter than the length of the first dorsal fin's base.
A critical diagnostic feature used in the field to identify the White Marlin (*Kajikia albida*) involves comparing the length of its bill (rostrum) to the base length of its first dorsal fin. Specifically, the bill is characterized as being shorter than the measurement spanning the base of that first dorsal fin. This dimensional metric serves as a reliable initial indicator, helping to separate the *Kajikia* genus from other billfish, notably species within the *Makaira* genus, which typically possess proportionately longer bills relative to their dorsal fin base length. This subtle difference in proportion is a key identifier for experienced observers.
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