- Kingdom: Animalia
- Phylum: Chordata
- Subphylum: Vertebrata
- Superclass: Gnathostomata
- Class: Actinopterygii
- Order: Gasterosteiformes
- Family: Gasterosteidae
- Scientific name: Spinachia spinachia
- Norwegian: tangstikling
The 14-17 isolated spines on the back, in front of the second dorsal fin, have given names to this fish. The elongated body can reach a length of 20 cm. The color is usually light green with brown blotches.
The fifteenspined stickleback is usually seen in shallow waters, hiding among seaweeds. The male builds nests from vegetation from April to June.
This species is found along the coasts of Europe, from Spain to northern Norway.