Home › Words › B › barrelfishbarrelfishbarrelfish · noun — the black rudderfish, Hyperoglyphe perciformis.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom barrel + fish.nounThe black rudderfish, Hyperoglyphe perciformisDefinitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.bandfish 63% match — Any of many perciform fish of the family Cepolidae vs barrelfish →barberfish 61% match — Johnrandallia nigrirostris, a cleaner fish. vs barrelfish →barbelgudgeon 61% match — The Dalmatian barbelgudgeon, Aulopyge huegelii. vs barrelfish →beltfish 61% match — The largehead hairtail, Trichiurus lepturus. vs barrelfish →amberfish 60% match — An amberjack. vs barrelfish →marblefish 60% match — Any of the family Aplodactylidae of perciform fishes. vs barrelfish →graveldiver 60% match — Scytalina cerdale, a small, compact perciform fish with a snake-like head. vs barrelfish →foolfish 60% match — filefish vs barrelfish →