swordtail

English

English Wikipedia has an article on:

swordtail

Wikipedia

Wikispecies has information on:

Xiphophorus hellerii

Etymology

From sword +‎ tail.

Noun

swordtail (plural swordtails)

1. One of many species of freshwater fish, in genus Xiphophorus, others of which are called platyfish.
   • 1998 August 21, Gretchen Vogel, “EVOLUTIONARY BIOLOGY:Doubled Genes May Explain Fish Diversity”, in Science‎, volume 281, number 5380, →DOI, pages 1119–1121:

     But ongoing efforts to sequence genes from other fishes, including salmon and swordtail, will also help to test the theory, Postlethwait says.

2. Any of various papilionid butterflies that have a long sword-like projection from the tornal section of each hindwing.

Hyponyms

• five-bar swordtail
• green swordtail
• red swordtail

Translations

freshwater fish

Bulgarian: хелер m (heler) Danish: sværddrager c Finnish: miekkapyrstö French: xiphophore (fr) m Greek: ξιφοφόρος (el) m (xifofóros) Russian: мечено́сец (ru) m (mečenósec)