acus, Belone Risso [A.] 1827:443 [Histoire naturelle des principales productions de l'Europe méridionale v. 3; ref. 3757] Mediterranean Sea. No types known. •Synonym of Belone belone (Linnaeus 1760) -- (Collette & Parin 1970:10 [ref. 7415], Parin 1973 [ref. 7191], Bilecenoğlu et al. 2002:60 [ref. 26753], Collette 2003:2 [ref. 27306], Lipej & Dulčić 2010:34 [ref. 36649]). •Synonym of Belone belone Linnaeus 1760, but a valid subspecies acus Risso 1827 -- (Collette 2003:13 [ref. 27306], Collette 2016:2123 [ref. 34601]). •Valid as Belone acus Risso 1827 -- (Fricke et al. 2007:69 [ref. 29533], Wirtz et al. 2013:121[ref. 32972], Carneiro et al. 2019:198 [ref. 37250], Bariche & Fricke 2020:42 [ref. 37515]). Current status: Valid as Belone acus Risso 1827. Belonidae. Distribution: Mediterranean Sea; eastern Atlantic: adjacent Portugal. Habitat: marine.