noun
- Plural of homocercy; the condition in fish where the tail fin is symmetrical, with the vertebral column ending at or before the base of the tail.
Usage: ichthyology; technical
Examples
- Modern fish exhibit homocercies as an adaptation for efficient swimming.
- The study compared homocercies in teleost fishes with heterocercies in sharks.
- Homocercies represents an evolutionary advancement in tail fin structure.