roark fishies, I've got some info for you.
#1) If you do puffers, figure 8's may be the best bet. They seem to do better in a FW environment. LFS sell puffers as FW fish (most do), however some are brackish fish that will need a semi/salt environment when older.
This could pose a problem.They also have a VERY DEMANDING & specific feeding requirements. They will not eat flake or dried foods. Instead they need to be fed live or frozen foods such as snails, shrimp, worms, daphnia, clams, and oysters.
#2) Lotus is correct, betta's will eat shrimp, if not right away, then right after a molt, when they are nice, juicy and vulnerable for eating.
Housing a betta with a couple african dwarf frogs should be OK. Hopefully, the betta is temperament is a bit milder than some. Make sure they are the ADF, and not the clawed variety that get big and eat everything.
ADF depend on smell for their food mostly, their eyesight is not great. If fed too many sinking pellets that aren't eaten, you may have to remove them before they foul the water.
So if your daughter would like a betta, I'd try a betta. They are relatively inexpensive, quite showy, without the big crazy feeding requirements that puffers have.
I know your delema.. I have my daughter's 12g nanocube FW planted tank empty again.. and I'm just itchin' to make it a "Something" tank.. just need to find that "SPECIAL SOMETHING"..
OH the possibilities......
