Hi everyone! I've been browsing this forum for help with my relatively new goldfish, and it's been massively helpful thus far. But I haven't been able to find any answers about my fish's current behavior.
Normally I have a 10 gallon tank for him that's in great condition and tests normally for ammonia, nitrites/nitrates, pH levels, etc. The tank's been fully cycled and the fish have been there for about 4 months. However, I had to come home for Christmas break for 3 weeks and couldn't find anyone to care for my fish. I'd had a calico fantail and this ryukin, Ezreal. I picked up a little travel tank (about 3 gallons?) since I couldn't bring their whole tank home with me. The calico fantail died shortly after we got home (a 7-hour drive from my apartment). I think he got too stressed out from the drive (Who wouldn't?) On the drive home too, my filter broke, but I didn't realize it until after I'd set up Ezreal in the mini-tank on my desk. He'd swam into it and it cut up his face. He's been ok since and seems fully healed, but I had to toss the filter since it's obviously broken.
Ezreal has always been very active and social, but lately he's been acting more frantic than just active. He's still always looking for food and always swims to the top of the tank when I'm near, as if expecting me to feed him just because he's there (since normally the main times I'm near the tank in my apartment, it's to feed them). I don't know if it's just stress from the trip + stress of being in a smaller tank temporarily + the tank being in a new location in general. Or maybe it's more serious? Needless to say, I'm a bit worried. (He has not been flashing, swimming upside down, staying in one place for a long period of time unless he's "sleeping" at night, or having issues with floating.)
Sorry for the essay xD figured more info the better.