pelvic fin: meaning, definition, pronunciation and examples
LowTechnical/Scientific
Quick answer
What does “pelvic fin” mean?
One of a pair of fins on the lower, posterior part of a fish's body, located behind or beneath the pectoral fins.
Audio
Pronunciation
Definition
Meaning and Definition
One of a pair of fins on the lower, posterior part of a fish's body, located behind or beneath the pectoral fins.
In ichthyology, a paired fin situated near the anus or genital opening, homologous to the hind limbs of terrestrial vertebrates. It is used primarily for stability, steering, and braking.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. Spelling conventions (e.g., 'anatomise' vs. 'anatomize' in related texts) may apply.
Connotations
None.
Frequency
Equally rare in both dialects, confined to technical contexts.
Grammar
How to Use “pelvic fin” in a Sentence
The [fish species] has [adjective] pelvic fins.The pelvic fins are used for [verb-ing].Vocabulary
Collocations
Examples
Examples of “pelvic fin” in a Sentence
adjective
British English
- The pelvic-fin morphology is distinctive.
- A pelvic-fin spine was observed.
American English
- The pelvic fin morphology is distinctive.
- A pelvic fin spine was observed.
Usage
Meaning in Context
Business
Not used.
Academic
Used in biological, zoological, and ichthyological texts and research.
Everyday
Virtually never used in casual conversation.
Technical
Standard term in fish anatomy, aquaculture, fisheries science.
Vocabulary
Synonyms of “pelvic fin”
Neutral
Weak
Vocabulary
Antonyms of “pelvic fin”
Watch out
Common Mistakes When Using “pelvic fin”
- Confusing it with the 'pectoral fin' (front fins).
- Using 'pelvic fin' to refer to any lower fin.
- Misspelling as 'pelvik fin'.
FAQ
Frequently Asked Questions
In modern ichthyology, 'pelvic fin' is the preferred term. 'Ventral fin' is an older, less specific synonym that can sometimes refer to any fin on the lower surface.
No. Many fish groups, like eels and some catfish, have reduced or completely lost their pelvic fins through evolution.
Pelvic fins are homologous to the hind limbs (legs) of tetrapods, including humans.
Pectoral fins are the 'front' paired fins, located behind the gills, often used for steering and lift. Pelvic fins are the 'rear' paired fins, located further back on the belly, used more for stability and braking.
One of a pair of fins on the lower, posterior part of a fish's body, located behind or beneath the pectoral fins.
Pelvic fin is usually technical/scientific in register.
Pelvic fin: in British English it is pronounced /ˈpɛlvɪk fɪn/, and in American English it is pronounced /ˈpɛlvɪk fɪn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think PELVIS (the hip bone area) + FIN. The pelvic fins are like the fish's 'hips' or 'legs'.
Conceptual Metaphor
THE FISH'S LEGS/HIPS (for locomotion and balance).
Practice
Quiz
Which of the following is a primary function of the pelvic fin?