Downsize
6" leo rays
6" asian aro (and US legal..... )
6" RTC
6" TSN
12" dolphin
12" manitee
12" octopus
UPSIZE
2' kuhli loaches
2' flagtail
1' blue rams (with at least a 6 month life expectency)
1' apistogramma
1' bristlenose pleco (don't want to read it's mind though, it would ask for my beer)
downsize
6inch pbass
6inch rhoms
6inch whitespot grouper and cherry grouper sw
2inch bluespot rays sw and wish they werny so $$$
3inch marine bettas and wish they werny so $$$
There are plenty of fish i wish would stay small instead of growing so large you'd require a small lake to house them...
Such as an MBU that only grew to a foot or two? what would be a really amazing sight would be to have something like a miniature great white shark that only grew to like 2 feet long...
oddball already own's the largest species of pleco and that guy is some 3 foot+ in size, so one double the size really wouldn't be all that amazing for me to see.