The funivenator twangeri was a slight mutation off of its ancestor, the funivenator organuculus, and soon successfully competed with them in the sunlight zone of the Jujubee Ocean, although their evolution was so minor and their bodies so small that they failed to spread outside of this area very successfully, and could be considered "bound" to this location, leaving all other organuculus populations fully intact. Competition with the twangeri brought the organuculi numbers down to nearly two-thirds of their original numbers, although both groups continued to exist with one another sufficiently well enough. As such, the twangeri were considered but a split off of the original strain, and did not cause any organuculus populations to go extinct.
The mutation allowed both flagella to fuse together, providing the one still used in locomotive capabilities the space necessary to facilitate exponential growth, which it has grabbed a hold of, growing longer and thicker to allow them to be able to swim easier. The other flagellum - or twanging strand - however, now rests on the underside of the swimming flagellum, where it continues its regular operations. Another evolution included the adaptation of a number of cnidocytes; these had their needles grown longer and more flexible, at which point they were able to sense vibrations easier, operating similar to sparse hairs by letting them feel their kind's twangings easier, as well as determine the difference between twangeri and organuculus vibrations.
Continuing to prefer swimming in schools, they often form large cloud-schools, allowing them to protect themselves from predators and to more effectively hunt. Hunting skills are improved because a solitary F. twangeri who finds a potential meal will break from the rest of the school to hunt it down, which in turn causes the rest of the school to follow it due to the instinct to "pluck" their twanging strand and to follow similar sounds. This allows them to easily surround the prey item for quick and easy consumption. As such, the eyespots upon their tentacle-appendages are slightly more powerful as to spot prey at a further range away.