dimorphism
In biology, the occurrence within a species of two forms which differ distinctly from one another in one or more characters, e.g., colour pattern or morphology.
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Ichthyological terms, not general ones.
sexual dimorphism
Phenotypic difference between males and females of a single species. Used in species profiles here on SF to refer to differences in morphology or colour pattern, but officially also refers to behavioural differences.
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dimorphic
Exhibiting dimorphism.
Used in 6 profiles