My 3 inch silver shark can swim perfectly well when it wants to, but sometimes I see it floating upside down, then when I approach the tank it swims normally again. It also often swims downward or upside down to eat food caught in the filter. It seems healthy 90 percent of the time, and the tanks in perfect water conditions. I assumed if it were swim bladder it couldn't swim normally at all...
Do all silver shark do this? Thanks for any answers.
Do all silver shark do this? Thanks for any answers.
