1. having more fins or larger fins than usual; characterized by prominent fins
Usage: comparative form of 'finny'; used in zoology and ichthyology to describe fish or aquatic creatures

Examples

• The finnier species of fish are often faster swimmers.
• This finnier variety of tuna has adapted well to deep ocean waters.
• Among the two fish, the finnier one was easier to identify.
• The finnier design of the sailfish helps it maneuver through water with precision.