... at extremely high levels. These attributes are related to reproduction in ways that have not been fully characterized. In the present study, we have demonstrated that female-specific zinc and MT accumulation and distribution are strongly correlated to the onset of sexual maturity in Holocentrus adsenscionis...

... of Biologists 1992 rainbow trout sex sexual maturity relative ventricle mass cardiac performance Oncorhynchus mykiss Trout anglers have observed that jacks are more athletic when hooked than hens, and that the strongest fighters during capture are fish that are migrating upstream to spawn...