条じょう鰭き綱こうMeanings1nounActinopterygii; ray-finned fishesScientific taxonomic class name for ray-finned fishes, used in biology and ichthyology contexts.条じょう鰭き綱こうは、現げん生せいの魚ぎょ類るいの大だい部ぶ分ぶんを含ふくむ分ぶん類るい群ぐんである。Actinopterygii is a taxonomic group that includes the majority of living fish species.