Melanoma is the most dangerous skin cancer and is caused by uncontrolled growth of melanocytes, pigment producing cells. Zebrafish are an excellent model organism for skin cancer research since they have melanophores which are comparable in form, molecular processes and function to melanocytes in humans. By studying mutations in how these melanophores develop, researchers can shed light on the mechanisms that can be targeted for melanoma treatments. To study melanophore development, zebrafish mutants of the line Magritte AxB were compared to wildtype zebrafish. If fish from these two groups were imaged twice a week for three months to determine if mutant zebrafish lost or gained melanophores through development and how the shapes of these cells different between fish lines. Images were used to count melanophores and R Studio and Morphoj were used to determine if the shapes of the melanophores differ between mutant and wildtype zebrafish. and different locations on the body: dorsal fin, dorsal body plan, ventral body plan. To rule out sex as a factor, we tested the morphology of melanophores between females and males. We found that as zebrafish mature, mutants lose their melanophores while wildtype fish gain melanophores. There was no difference in morphology of mutant and wildtype melanophores or between females and males. The only morphological difference was between the dorsal fin melanophores which are more elongated than the body plan melanophores. This implies that mutations do not affect the shape of melanophores, but transcription factors and protein expression are likely affecting the development of these melanophores.