filefish

Thân thiện

A filefish swims near a colorful coral reef.

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.

Học thuật

Noun

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