The Mediterranean native biota is increasingly threatened by the influx of alien species. More than 100 non-native fishes have entered so far the Mediterranean, the majority of which presumably originated in the Red Sea. Among them, two species of the family Siganidae, namely Siganus luridus and Siganus rivulatus, are now widespread in the eastern Mediterranean Sea and already reached the central parts of the basin. Three further Siganus taxa, namely Siganus fuscescens, Siganus javus, and Siganus virgatus, have also been recorded from the Mediterranean basin, although their records are based on single specimens. We report the first sighting in the Mediterranean Sea of a single specimen of an additional rabbitfish, namely Siganus argenteus. There are no certainties regarding the possible pathway of arrival of this species in Libya; however, Lessepsian migration or shipping constitute the most probable ones.

地中海本土生物群系日益受到外来物种涌入的威胁。到目前为止，已有100多种非本地鱼类进入地中海，其中大部分可能起源于红海。其中，Siganidae科的两个物种，即Siganus luridus和Siganus rivulatus，现在广泛分布于地中海东部，并已到达盆地中部。另外三个蓝子类群，即蓝子fuscescens，爪哇蓝子鱼和蓝子雀鹰尽管它们的记录是基于单个标本的，但它们也已从地中海盆地记录下来。我们报告了在地中海首次发现的另一只兔子鱼（即Siganus argenteus）的单个标本。关于该物种到达利比亚的可能途径尚无定论。但是，莱斯比族人的迁徙或运输是最有可能的。