Noun: Gasterosteus pungitius
- Small freshwater fish with spines along its back
"The Gasterosteus pungitius is smaller than its three-spined cousin";
- ten-spined stickleback, ninespine stickleback, Pungitius pungitius
Type of: prickleback, stickleback
Part of: Gasterosteus, genus gasterosteus