shellcracker
/ˈʃɛlˌkrækər/
noun
- A freshwater fish (Lepomis microlophus) also called redear sunfish, known for eating snails and having a red spot on its gill cover.
- Shellcrackers are popular with anglers because they put up a good fight.
- We caught a big shellcracker while fishing in the lake.
- The red spot on the shellcracker's gill makes it easy to identify.