What is the typical soft ray count for the Yellow Bullhead’s anal fin?
Answer
Between 21 and 27 soft rays.
The anal fin morphology provides a specific numerical characteristic useful in identification. The Yellow Bullhead’s anal fin consistently contains a soft ray count falling within the range of 21 to 27 rays. This specific count is important because it helps differentiate the species from related bullheads; for instance, the Black Bullhead generally possesses fewer rays, usually numbering between 19 and 23. Additionally, another subtle cue related to this fin is that its leading edge usually lacks any significant dark pigmentation, frequently appearing clear or pale, which aids field identification when the fish is partially obscured.
Related Questions
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