Definition

Noun: 1. A type of marine fish characterized by a narrow, laterally flattened body, rough leathery skin, and a single, strong, retractable spine on its dorsal fin that resembles a file's handle. They are typically found in warm, shallow waters.

Examples

• The filefish uses its dorsal spine to lock itself into crevices for protection.
• Divers often spot colorful filefish hiding among the coral reefs.
• The leathery skin of the filefish provides excellent camouflage against predators.

Advanced Usage

• In ichthyology (the study of fish), the term filefish refers specifically to members of the family Monacanthidae.
• The name "filefish" is derived from the rough, file-like texture of their skin.

Variants and Related Words

• Leatherjacket: A common name for some species of filefish, also referencing their tough skin.
• Triggerfish (Balistidae): A closely related family of fish, often confused with filefish. A key difference is that triggerfish have a larger first dorsal spine with a locking mechanism involving a second smaller spine.

Synonyms

• Leatherjacket (for specific species)
• Monacanthid (scientific term)

Different Meanings

• The word "filefish" has only one primary meaning, referring to the specific type of fish described above. It is not commonly used in other contexts.

Noun

1. narrow flattened warm-water fishes with leathery skin and a long file-like dorsal spine