If any fish can be said to be “bullet proof” this fish is it. I gave mine to a friend when I could no longer keep it, over two years ago when it was about three inches long. The fish has grown, in a twenty gallon tank with almost no water-changes and ridiculous water quality until it is now a five inch, healthy monster!
I recently acquired a 1.5” juvenile for my collection again.
If pulled out of the water it will make a croaking sound.
20 gallon tank, bare minimum
Lots of places to hide in the form of driftwood, rocks, etc…