Tetraodon schoutedeni (Spotted Congo Puffer) tried to bite Hara jerdoni (Stone Catfish)

[christiansakai]

I know that Tetraodon schoutedeni is one of the peaceful species of freshwater dwarf puffers. I have 3 of them currently with many nano fish, including betta fish, peacock goby, neon tetra, ember tetra, pygmy cory, amano shrimp, nerite snails, golden pencilfish, forktail rainbow, and asian stone catfish.

I've never seen any of those three attack any other fish/shrimp other than Hara jerdoni (asian stone catfish). When the stone catfish goes out from their hiding, my schoutedenis suddenly get so worked up and attempted to bite the stone catfish.

Anyone has similar experience?

[Pufferpunk]

I'm not sure why you'd categorize them as "dwarf" species?

[SAPpyPuffer]

Not sure if I could consider the Congo puffers as suitable tankmates. Sure, they’re more mellow than other species, but mellow for puffer fish still doesn’t make them great with certain fish. Remember, puffers are curious, territorial fish, and will try to chase their tankmates, and can succeed. Also, how big are your congos? Like Pufferpunk said, I wouldn’t consider them fish for a “nano tank”.

[astrid37]

That is a lot of fish in with even a schoutedeni. What size is your tank? This could be overcrowded and the puffer acting accordingly.

[christiansakai]

That is a lot of fish in with even a schoutedeni. What size is your tank? This could be overcrowded and the puffer acting accordingly.

They are fine with other fish. Except the Hara Jerdoni.

[astrid37]

Having a tank too small for the inhabitants and without proper lines of sight can exacerbate aggression.