ascending process of premaxilla Vertical extension at the anterior end of the premaxilla in most teleost fishes, particularly elongate in larvae of some taxa (e.g. gerreids).

• 前颌骨向上突起在前颌骨的前端在大多数的硬骨鱼的垂直的延长,特别地在一些分类单元(例如鲾鱼)的仔鱼的延长。