Related Clues:

• Hitchhiker on a shark
• Fish also called a sharksucker
• Marine spiny-finned sucking-fish
• Ride-hitching fish
• Rider on a shark
• One of the suckers among the swimmers found in 3 down
• Fish that may attach itself to a 68-Across
• Suckerfish that attaches itself to sharks
• Fish with a sucking disk