A juice sucker with odd anatomy is the climbing fish. This diminutive false fish has five digestive tracts that begin in beaked mouths and end in anal cones. Both the beaks and the cones are used as legs for climbing through the weeds. Thus the ventral surface becomes the posterior and the dorsal surface becomes the anterior. The beaks often specialize in different activities for different parts of the weeds, such as stripping, chewing, or crushing. In most species, the foremost beak sits at the end of a long, jointed appendage used for wrapping around and grasping weeds. This beak is usually used only for drinking juices, which make up the bulk of the animal’s diet. In most species, the rearmost “legs” are also jointed enough to grasp weeds by working together. The larger species tend to be spiny and lightly armored while the smaller species tend to be soft and have very reduced bones.
Written by Daniel Noe, ChampionOfTheGalaxy.com