Xyphophorus helleri vs helleri

Xyphophorus helleri and helleri both are nouns.

Word	Noun	Adjective	Verb	Adverb
Xyphophorus helleri	Yes	No	No	No
helleri	Yes	No	No	No

As nouns, Xyphophorus helleri and helleri are synonyms defined as:

Xyphophorus helleri and helleri: freshwater fish of Central America having a long swordlike tail; popular aquarium fish

Other synonyms of Xyphophorus helleri include swordtail, topminnow.

Xyphophorus helleri (noun)	helleri (noun)
freshwater fish of Central America having a long swordlike tail; popular aquarium fish	freshwater fish of Central America having a long swordlike tail; popular aquarium fish