STMN1 and microphthalmia: Meanwhile, Cu overload zebrafish embryos and larvae exhibit dysfunctional locomotor behavior, microphthalmia, and retinal developmental defects (Zhao et al. 2020), and stathmins have been reported to be required in neural cell development (Beilharz et al. 1998; Levy et al. 2011; Zhao et al. 2020).