Puffers in freshwater

Can you keep dwarf puffers like the leopard and figure 8 in complete freshwater for their entire lives even though they are brackish fish? I'd love to get some tanks set up for them but I dont want to have to maintain true brackish conditions for them when they are older.

 

From what I understand, both of those types of puffers are not dwarf. Figure 8s are a little smaller, but Leopard (Green Spotted) get a decent size compared to the dwarf pea puffers. I plan on getting the pea puffers because they are definitely freshwater.
Green Spotted Puffer Fish Care - Size, Lifespan, TankMates, Breeding
Figure 8 Puffer Fish Care - Size, Lifespan, TankMates, Breeding, Diet and Behavior

 

From what I understand, both of those types of puffers are not dwarf. Figure 8s are a little smaller, but Leopard (Green Spotted) get a decent size compared to the dwarf pea puffers. I plan on getting the dwarf pea puffers because they are definitely freshwater.
Green Spotted Puffer Fish Care - Size, Lifespan, TankMates, Breeding
Figure 8 Puffer Fish Care - Size, Lifespan, TankMates, Breeding, Diet and Behavior

I guess I should re-qualify what I mean, they are definitely dwarf-like in comparison to something like a mbu. I'll read those articles and see what I come up with.

 

I guess I should re-qualify what I mean, they are definitely dwarf-like in comparison to something like a mbu. I'll read those articles and see what I come up with.

Ah I see what you mean.

 

The Peapuffers are freshwater, but they are dwarf's compared to the figure 8 LOL.

I think the Amazon Puffer (South American Puffer) and congo pufer is similar size to Green Spotted Puffer (a little smaller) and freshwater...I don't know how hard they are to get/etc... its been hard to get puffers lately.

 

FYI: This thread sez figure 8 need brackish water once adults. It also sez pea puffer are freshwater and pea puffer is another name for dwarf puffer.

Are Figure 8 Puffers Pure Freshwater? | 382644 | Puffers