Remora

Remora

The remoras ( /ˈrɛmərəs/, scientific name Echeneidae), sometimes called suckerfishes, are a family of ray-finned fishes in the order Perciformes. They grow to 30–90 cm long (1–3 ft), and their distinctive first dorsal fins take the form of a modified oval sucker-like organ with slat-like structures that open and close to create suction and take a firm hold against the skin of larger marine animals. By sliding backward, the remora can increase the suction, or it can release itself by swimming forward. Remoras sometimes attach to small boats. They swim well on their own, with a sinuous, or curved, motion.

Remoras are primarily tropical open-ocean dwellers, occasionally found in temperate or coastal waters if they have attached to large fish that have wandered into these areas. In the mid-Atlantic, spawning usually takes place in June and July; in the Mediterranean, it occurs in August and September. The sucking disc begins to show when the young fish are about 1 cm long. When the remora reaches about 3 cm, the disc is fully formed and the remora is then able to hitch a ride. The remora's lower jaw projects beyond the upper, and the animal lacks a swim bladder.

Some remoras associate primarily with specific host species. They are commonly found attached to sharks, manta rays, whales, turtles, and dugongs (hence the common names 'sharksucker' and 'whalesucker'). Smaller remoras also fasten onto fish such as tuna and swordfish, and some small remoras travel in the mouths or gills of large manta rays, ocean sunfish, swordfish, and sailfish.

The relationship between a remora and its perfect host is most often taken to be one of commensalism, specifically phoresy. The host to which it attaches for transport gains nothing from the relationship, but also loses little. The remora benefits by using the host as transport and protection, and also feeds on materials dropped by the host. Controversy surrounds whether a remora's diet is primarily leftover fragments, or the feces of the host. In some species (Echeneis naucrates and E. neucratoides), consumption of host feces is strongly indicated in gut dissections. For other species, such as those found in a host's mouth, scavenging of leftovers is more likely.

Read more about RemoraSpecies, Use For Fishing, Mythology

Other articles related to "remora":

Remora - Mythology
... See also Echeneis In ancient times, the remora was believed to stop a ship from sailing ... In Latin, remora means "delay", while the genus name Echeneis comes from Greek echein ("to hold") and naus ("a ship") ... In a notable account by Pliny the Younger, the remora is blamed for the defeat of Mark Antony at the Battle of Actium and (indirectly) for the death of Caligula ...
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... Australian Submarine Rescue Vehicle Remora (ASRV Remora) was a submarine rescue vehicle used by the Royal Australian Navy (RAN) between 1995 and 2006 ... The name comes from the remora, a small fish that can attach itself to larger marine life, and has the backronym "Really Excellent Method Of Rescuing Aussies" ... Remora was constructed by OceanWorks International of North Vancouver, British Columbia for the RAN, based on a diving bell ...
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... both the developer and public pages, codenamed Remora, was launched on March 23, 2007 ... Another visual refresh, "Remora 3.2", launched spring 2008 ... In 2011, Remora (written in PHP/CakePHP) was replaced with Zamboni (written in Python/Django) ...
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Spearfish Remora
... The spearfish remora, Remora brachyptera, is a remora of the family Echeneidae, found around the world in tropical and subtropical seas ...