Spearfish remora
Encyclopedia
The spearfish remora, Remora brachyptera, is a remora
Remora
The remora , sometimes called a suckerfish or sharksucker, is an elongated, brown fish in the order Perciformes and family Echeneidae...

 of the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Echeneidae, found around the world in tropical and subtropical seas. Its length is up to 50 cm.
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