My white tetra is still on bottom more than ever.the short bursts of swimming he does are so aggressive, he swims up of bottom, shoots to other side of tanks a few times, then slowly runs out of energy, drifts back to his corner. Sometimes he even breyaches out of the top of tank. Water is still pristine, levels perfect. Just old i guess like everyone says. I just don't want any suffering. I've read up on the posts for euthanasia (personally any human that would flush or boil a family member like your fish should expect the same, that's my opinion and I'll deal with any crap) he's uninjured. He's nit labored with his breathing. There really isn't any I've finfoun on simply old fish. I know there are typos in my post as well, when I try to fix them, things go wrong. I hate when people make grammatical errors, try not to judge. Anyhow, I just want what we all do. Give our finned friends the best life we can. I know my little guys have improved me as a person. Btw, I have a sixty five gallon tank with one white tetra, two black ones. Want to get more soon but can't stress my old boy (girl?) Out. Thanks you all for Abby help. Night! Maybe I'm computer illiterate, it's a sure bet. Like I said there are a hundred mistakes in my post, just don't know how to fix em. Still wouldn't boil or flush! Thanks