When distinguishing sexual characteristics, what feature typically develops on mature males that is longer than in females?
Answer
Interopercular spines
Mature Zebra Plecos exhibit clear sexual dimorphism, meaning males and females display noticeable differences upon close inspection. While both sexes possess these structures, mature males develop longer interopercular spines, which are the small, bristle-like protuberances located on the cheek area near the operculum (gill cover). Furthermore, males generally possess a wider head structure when viewed from above compared to females. Females, by contrast, tend to adopt a shorter and visibly plumper body shape, a characteristic that becomes especially pronounced as they approach spawning readiness.
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