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The common remora (Remora remora) is a pelagic marine fish [3] belonging to the family Echeneidae. The dorsal fin, which has 22 to 26 soft rays, acts as a suction cup , creating a vacuum [ 4 ] to allow the fish to attach to larger marine animals, such as whales, dolphins, sharks, and sea turtles.
The sucking disc begins to show when the young fish are about 1 cm (0.4 in) long. When the remora reaches about 3 cm (1.2 in), the disc is fully formed and the remora can then attach to other animals. The remora's lower jaw projects beyond the upper, and the animal lacks a swim bladder. [9] Some remoras associate with specific host species.
The marlin sucker or spear-fish remora (Remora osteochir) is a species of remora found all over the world in tropical and temperate seas. It can reach up to 40 cm (16 in) in standard length. It normally lives attached to a larger fish; its host preference is for marlins (as the name implies) and sailfishes, but it will attach to other large fish.
The white suckerfish can reach 30 cm (12 in) in standard length. The adhesive disk is short and wide, the length 34-40% and the width 22-26% of the standard length, with 13-14 lamellae. The pelvic fins are placed far forward and narrowly attached to the abdomen; the dorsal, anal, and pectoral fins are short with reduced rays. The dorsal fin ...
One of the whalesucker's most outstanding traits, shared among the Echeinedae family, is an adhesive disk. The adhesive disk is a round, oval, sucking disk located on the top of a remora's head, with two layers of lamellae that allow for the remora to stick and unstick to the epidermal surfaces of larger fish, mainly cetaceans.
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The spearfish remora attaches itself with its disc to a host fish, with juveniles often attaching in the gill chambers. [1] Host fish include the sailfish, the white marlin, the black marlin, the striped marlin and the swordfish; all these fish swim faster than does the remora, and it is not clear how the remora attaches to the host in the first place. [5]
A whale shark “danced” with an entourage of tiny remora fish off the coast of Thailand in resurfaced footage from 30 May. A mesmerising underwater spectacle shows the world’s biggest fish ...