“Help me! I recently set up a fish tank and just bought a new puffer (or other fish), but now it’s dying on me!”
Did you just set up a tank within the last 2 months, went to the store and purchased a puffer (or another fish), brought them home, and now they are looking like they are dying? If so, you are probably suffering from an uncycled tank.
You need to take action IMMEDIATE or you puffer/fish will be dead before the day is over!