black mollie

variants: or black mollienisia
plural -s

Definition of black mollie

: a small jet-black poeciliid fish (Mollienisia sphenops) from Yucatan that is often kept in the tropical aquarium

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for black mollie

black mollie by shortening from black mollienisia

Keep scrolling for more

Learn More about black mollie

Statistics for black mollie

Cite this Entry

“Black mollie.” Dictionary, Merriam-Webster, Accessed 23 Oct. 2020.

Comments on black mollie

What made you want to look up black mollie? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Namesakes Word Quiz

  • a citrus fruit possibly named after a person
  • Which of the following is a fruit named after a Moroccan seaport?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!