I would need to refer back to The Buffalo Rumbling Range thread.
It was a time when the aquarium was just being established and was unstable so many of those fish have since departed.
For example, the 5" shark I had then was a Rainbow Shark and sadly he died and was replaced by a smaller but fast growing Rainbow Shark and and a Red Fin Shark.
The Red Fin Shark in particular is an ASSHOLE who often chases other smaller fish although he is harmless for the most part.
He/she/it/2-spirits is definitely a Trump Fluffer.