棘きょく条じょう

noun, noun which may take the genitive case particle 'no'

spiny ray (of a fin)

Technical term in ichthyology; refers to the hard, unsegmented rays in fish fins, as opposed to soft rays (鰭条).

See also: 鰭条

• 棘きょく条じょうと軟なん条じょうの数かずは魚ぎょ種しゅの同どう定ていに使つかわれる。

  The numbers of spiny rays and soft rays are used for fish species identification.