ðə spəsˈɪfɪk ˈɛpɪθɪt ɪz dᵻɹˈaɪvd fɹʌmðə lˈætɪn ˈælbaɪ mˈiːnɪŋ "wˈaɪt", ænd mˈɑːɹdʒɪnˌæɾəs mˈiːnɪŋ "tʊ ɛŋklˈoʊz wɪð ɐ bˈoːɹdɚ", ɪn ɹˈɛfɹəns tə ðə dɪstˈɪŋkt wˈaɪt fˈɪn mˈɑːɹdʒɪnz.
The specific epithet is derived from the Latin albi meaning "white", and marginatus meaning "to enclose with a border", in reference to the distinct white fin margins.