Sea Life

Remora Diet, Species, And Facts

Remora Diet, Species, & Facts

When we think about ocean creatures, we often picture the majestic dolphins, sleek sharks, or the vibrant world of coral reefs. Yet, the ocean is vast and teeming with a multitude of intriguing species, some of which don’t often steal the spotlight but are equally fascinating. One such marine resident is the remora, often called the suckerfish. In this article, we’ll take a deep dive into the life of remoras, exploring their peculiar eating habits, the various types that exist, and some curious facts about these oceanic hitchhikers.

Who Are Remoras?

Remoras, also known as suckerfish, a member of the Echeneidae family, have evolved in incredible ways to survive in the competitive ocean environment. They usually favor warm waters and develop a unique relationship with larger marine animals. Remoras possess an unusual feature on their heads called the “cephalic disc,” which acts like a suction cup, allowing them to cling to larger marine creatures like sharks, turtles, and whales.

Despite their relatively small size, typically ranging from 30 to 90 cm in length, their streamlined body helps them glide effortlessly through the water. Their dark coloration helps them blend in with their host species, offering them protection, transportation, and a constant source of food.

What Does Remoras Eat? 

Remoras are not your typical predators; they are not built for chasing prey or hunting, instead, their diet mainly consists of leftovers, bits, and pieces provided by their hosts. This dietary adaptation fits perfectly with their hitchhiking lifestyle. Moreover, Remoras are opportunistic eaters that feed on detritus, parasites, and tiny morsels of food that float away when their host animals feed. This scavenging behavior is their way of making the most of their relationship with larger creatures.

What Are the Diverse Types of Remoras? 

Remoras are not just a single species; they have a family of fish with several distinct members, each with its unique characteristics and habits. Here are some of the standout species:

Common Remora (Echeneis naucrates): The common remora is perhaps the most familiar member of the family, found in oceans worldwide. It is often seen hitching rides on large marine animals such as sharks, rays, and sea turtles. The common remora has an elongated body with a distinctive dorsal fin that functions as a suction disc for attachment.

Shark Sucker (Echeneis naucrates): As its name implies, they frequently attach themselves to sharks. This species stands out with its striking dark body and white belly. It also boasts a modified dorsal fin for attachment.

Slender Suckerfish (Remora brachyptera): True to its name, the slender suckerfish has a sleeker body compared to other Remora species. It often latches onto fast-swimming hosts, particularly oceanic sharks.

Remora (Remora remora): The appropriately named “remora” is another family member known for its attachment to larger marine animals. It can be found in various oceans and is easily identifiable by its distinctive dorsal fin suction disc.

Spearfish Remora (Echeneis Neucratoides): This species prefers warm tropical waters and is commonly seen on sailfish, marlins, and other large fish. It may be slightly smaller than some relatives but shares the same attachment behavior.

What Are the Fascinating Facts About Remoras? 

Remoras may not be in the limelight, but they possess a treasure trove of interesting facts that highlight their incredible adaptations and their significance in marine ecosystems, such as: 

Adjustable Suction: Remoras have an astonishingly adaptable suction cup on their heads. They can fine-tune the strength of their grip to hold onto their host securely without causing any harm. This feature allows them to detach and reattach swiftly, preventing them from becoming permanent hitchhikers.

Quick Learners: Research has shown that remoras can swiftly adapt to different hosts, allowing them to thrive in various oceanic environments.

An Ancient Lineage: Remoras have a long evolutionary history, with fossils dating back to the Miocene epoch, around 23 million years ago. This suggests that their hitchhiking lifestyle has been successful for quite a while.

Mutually Beneficial Relationships: While remoras gain protection and access to food from their hosts, the larger animals also benefit. The remora’s cleaning behavior helps keep its host free of parasites and potentially reduces drag while swimming.

Extraordinary Sense Of Smell: Remoras possess an exceptional sense of smell, which helps them detect chemical cues in the water, leading them to potential hosts. This keen sense of smell assists them in finding suitable partners for their unique symbiotic relationships.


Remoras are truly captivating creatures that have found their habitat in the vast and intricate world of the ocean. Marine biologists and nature lovers alike find them fascinating because of their distinctive adaptations, various species, and complex connections with bigger marine organisms. We’re sure to learn even more mysteries about these magnificent fish and the complex web of life they’re a part of beneath the waves.

About the author


I am a Scholar and a dedicated content writer. I am on a mission to stamp out the importance of one of the ocean's most fascinating and remarkable creatures, the sharks, and to let people know about their role in keeping the ecosystem in equilibrium.