Help! Pea Puffers dead, weak
Hello, I just recently bought three pea puffers from a local fish store Iíd say about two weeks ago. They were doing fine. I noticed that two of the puffers liked to hang around each-other and hide in the fake plants while the other puffer likes to stare outside the glass and be in the front of the tank. Then tonight, noticed I was missing two. I checked where they normally might be, (hiding in the fake plant) but they werenít there. It wasnít until I checked my last resort, the water intake, and they were stuck.
I immediately grabbed my fish net and started to net one of them. Right off the bat I could tell they were more skinny than normal. I filled a small container with the tank water and started to take out the puffer, which I assumed was dead. As I took it out, it started to puff up. I dropped it back in the tank as a startled reaction and examined as it floated and moped around. I then put it in the container and I could see itís fins still moving. I dropped a tiny bit of frozen blood worms in the container to see if it was starving, but it didnít bother. I currently have it in the container and itís moving every now and then but not to the extent of what Iíve seen. The other one I pulled out was dead. The puffer that is left in the tank is either a little bloated, or just healthy.
What couldíve caused these deaths?
Extra information: The tank is a 20 gallon hexagon. The puffers tank mates include two glo barbs, a loch eel, and a glo shark. The tank is a little dirty with algae that is caused from an extended amount of time with the light on. The loch eel dosenít bother anyone, usually stays at the bottom and hides. The glo shark is also a hider, he hides in the fake plants and comes out here and there. The barbs are always out and about, and donít bother the puffers.