As It Happens Suckerfish, it turns out, are not always the most considerate travel companions to their manta ray hosts. It's not clear if the fish are motivated by food or fear. But it could be 'very uncomfortable' for the rays Listen to this article Estimated 4 minutes The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Scientists have documented seven instances of remora, a.k.a. suckerfish, diving into the cloacal openings of their manta ray hosts. (Bryant Turffs/Marine Megafauna Foundation) LISTEN | Full interview with scientist Emily Yeager: As It Happens 6:12 Suckerfish are diving headfirst into unsuspecting manta rays' rear-ends Suckerfish, it turns out, are not always the most considerate travel companions.  The little fish, also known as a remoras, are hitchhikers who traverse the oceans by latching onto larger marine animals like sharks, whales and manta rays.…