Good day! I am worried about my Gar. He ate about 7 feeders then won't eat now. Its been about 2 weeks since he last eaten. He's active and swims around my tank. But whenever I introduce feeders into the tank, he just stares at them as if he wants to eat them but he never tried to bite. Water Parameters are good, keeping it at 27 degrees celcius. Also, yesterday I did a 50% water change due to high nitrite levels, now my gar floats at the top of the tank. Is this normal. Thank you. Sorry for the long post.