Examination of the dorsal spinule patch in Lagocephalus spadiceus specimens revealed the existence of two intraspecific forms, the “wheeleri”-form, characterized by an elliptical patch, and the “spadiceus”-form, with a rhomboidal patch with a continuous or intermittent posterior extension. The forms were not indicative of sexual dimorphism, although the appearance of a posterior extension of the dorsal patch was apparently growth-related. Ontogenetic studies of both forms, including genetic analyses and cross breeding experiments, should be future considerations.

中文翻译：

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日本河豚Lagocephalus spadiceus的背棘突斑变异；再次证明存在“ spadiceus”和“ wheeleri”形式

在背小刺补丁的检查棕斑腹刺鲀标本揭示了两种种内的形式中，存在着“ wheeleri ” -构型，其特征在于由一个椭圆形贴片，并且“ spadiceus ” -构型，具有菱形补丁具有连续的或间歇的后伸。尽管背片后部延伸的出现显然与生长有关，但这些形式并不表示性二态性。两种形式的本体遗传学研究，包括遗传分析和杂交育种实验，都应作为未来的考虑因素。