So I know betta and goldfish huge no no normally. BUT
There's a lady on FB who has used 4 feeder goldfish to cycle a 29g tank. She's selling a 10 gallon and is giving away the gold fish. I've been told they're healthy with no problems. I was going to keep them in my hospital tank, but I haven't had a chance to switch everyone around yet and divide my 10g for newbie. Which leads to my question. Assuming they are all healthy, I'm going to her house to pick them up tomorrow so I will see their set up, etc, can they go in with Cooper for a few days until I can get everything to divide my tank? Coop is in a 5 gallon, so I'm fine with having to do extra water changes if needed. His tank doesn't have a heater but the water temp stays between 74-76 degrees since it's in my room. I've had goldfish in a community, but I've never kept one with my betta. The one and only time I had a male betta in a community, he killed everything but my dwarf frog. She said these are maybe half to an inch long, so they should be fine in my 5 gallon for now. Opinions? Thoughts? I figure I can always rehome these later if needed, but would give Cooper a possible distraction from his tail biting (which has become habit now). She said she had photos of them on her FB page but her pics are private. So I haven't been able to see for myself anything yet.
ETA: Hospital tank is a 1 gallon so it's pretty much out of the question for now. Newbie is in it, but only due to treating him for splitting his tail fin. *my fish are sillies* But 1 gallon would be WAY too small for 4 feeders anyway, so I'm left with either kicking Coop out of his 5 and putting him in a 1 gallon bowl (which he hates) or trying to assimilate the 5 together for a few days.