| Zander are often called pikeperch as they resemble the pike with their elongated body and head, and the perch with their spiny dorsal fin. |
| The fins have strong leading rays, which form a row of sharp spines along the dorsal fin. |
| Thus, at this speed, the dorsal fin supplements the thrust produced by the oscillating pectoral and caudal fins. |
| With their long, slim bodies, they can be recognised easily by the large white tip on their first dorsal fin and the upper lobe of the tail. |
| Threespine sticklebacks are laterally compressed, fusiform shaped fish with three sharp, erectile spines at the forward part of the dorsal fin. |
| Flagfin mojarra has a dark marking on the dorsal fin with a white stripe just below the dark marking. |
