mollie: meaning, definition, pronunciation and examples

C2
UK/ˈmɒli/US/ˈmɑːli/

informal, technical (aquarium hobby)

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Quick answer

What does “mollie” mean?

A small, brightly colored freshwater fish from the Poecilia genus, often kept in aquariums.

Audio

Pronunciation

Definition

Meaning and Definition

A small, brightly colored freshwater fish from the Poecilia genus, often kept in aquariums.

Can be used as a given name (often a diminutive of Mary, Molly, or Margaret).

Dialectal Variation

British vs American Usage

Differences

In both varieties, 'mollie' primarily refers to the aquarium fish. The name 'Mollie' is used in both cultures, but the spelling 'Molly' is more common for the given name.

Connotations

As a fish name, neutral and specific. As a given name, often perceived as friendly, traditional, and somewhat informal.

Frequency

The term is low-frequency in general English but common within the aquarium-keeping community. The given name has moderate frequency.

Grammar

How to Use “mollie” in a Sentence

keep + (a/some) molliesbreed + molliesThe mollie + gave birth to + fry.

Vocabulary

Collocations

strong
black molliesailfin mollieaquarium molliebreed mollies
medium
tropical molliefemale mollielivebearing mollie
weak
colorful molliepet molliecommunity mollie

Usage

Meaning in Context

Business

Rare. Potentially in pet trade or aquarium supply contexts.

Academic

Used in ichthyology or biology texts discussing the Poeciliidae family.

Everyday

Mostly used by aquarium hobbyists. As a name, used in general social contexts.

Technical

Standard term in aquaculture and aquarium science for fish of the genus Poecilia, especially P. sphenops and P. latipinna.

Vocabulary

Synonyms of “mollie”

Strong

platy (related fish)guppy (related fish)

Neutral

livebearerPoecilia

Weak

tropical fishaquarium fish

Vocabulary

Antonyms of “mollie”

predator fishsaltwater fish

Watch out

Common Mistakes When Using “mollie”

  • Spelling: 'Molly' for the fish is common but the standard zoological spelling is 'mollie'.
  • Capitalisation: Not capitalising when it's a given name ('I have a mollie' vs. 'My friend Mollie').

FAQ

Frequently Asked Questions

No, it's a low-frequency word outside of specific contexts like aquarium-keeping or as a given name.

Lowercase 'mollie' typically refers to the fish. Uppercase 'Molly' or 'Mollie' is a given name. In aquarium contexts, 'mollie' is the standard spelling for the fish.

No, 'mollie' is only a noun (either a common noun for a fish or a proper noun for a name).

Yes, mollies are generally considered hardy and good for beginner aquarium hobbyists, though they prefer slightly brackish water conditions.

A small, brightly colored freshwater fish from the Poecilia genus, often kept in aquariums.

Mollie is usually informal, technical (aquarium hobby) in register.

Mollie: in British English it is pronounced /ˈmɒli/, and in American English it is pronounced /ˈmɑːli/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • As common as mollies in a pet shop.

Learning

Memory Aids

Mnemonic

MOLLIE the fish lives in your tank with a bright SMILE (sounds like 'mollie').

Conceptual Metaphor

PROLIFIC REPRODUCTION IS FERTILITY (mollies are known for breeding easily).

Practice

Quiz

Fill in the gap
For a lively community aquarium, you might add a few colourful .
Multiple Choice

What is the primary meaning of the lowercase word 'mollie'?

Practise

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Five interactive tools to remember words, train your ear, and build vocabulary in real context — drawn from this dictionary.

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