Curious about dwarf puffers

1) How many do you want? They are predators, so can be messy feeders, but a trio in a 10 will be fine and fairly stable. Smaller tanks with the same number can work if you are diligent about weekly changes, but they will require lots of manual feeding. In a big planted tank, they can eat snails, without getting all of them.

2) Pure FW. They can tolerate medicinal levels of salt, but they need FW to thrive, and true brackish conditions will kill them in short order.

Agree w/OG except that I would not crowd them into less space. Even at that I'd keep only one male to two females.

The tank is best heavily planted with busy plants and a few smallish clearings - even if you must use artificial, broken sight lines are important. Java Moss is a favored spawning site.

The fish require live (snails, scuds, even Daphnia, redworms) or frozen food (bloodworms are favorites). and as OG said, they are messy fish - large scale weekly water changes are needed (I do 50%).

That is quite true. For the small dwarves, the common pond snail is the most often used, best at about the size of the fish's eye (the standard rule of thumb for puffer/snail feeding). Dwarf puffers will do well without such a high percentage of hard crunchy food their larger kin need or require. If a snail is too big to crush, they bite and tug it out.

For lots more info on the dwarves, visit:

http://dwarfpuffers.com/forum/