I bought the fish on Tuesday. He/She is about 1 inch long. I kept it in a glass bowl like thing temporarily (about 1 or 2 gallons). it wouldn't eat those baby hikari pellets, but I put in 3 or so a couple times a day. I moved the baby to a 10 gallon aquarium 2 days ago with no heater or filter yet. I cleaned and added some gravel from my goldfish tank. The baby stayed at the top a lot in the corners, so i put my goldfishes bubbler in there for a night. yesterday I bought a bubbler splitter thing so both tanks could have bubbler, then I added a mini heater to the fish tank which should keep it at 78 degrees. The baby hasn't eaten from what I've seen. The heater heats the tank and it feels warm sometimes (like 78), but other times it feels the same as the goldfish tank (72-74). I just realized this so now the temperature might be messing the baby up too.
I put some conditioner in the water, and the water should be fine. *i don't have test strips but I know my tap water is fine from testing it previously. I just don't know the exact numbers, PLEASE NO RESPONSES THAT DONT ACTUALLY HELP ME. I'm sick of people replying asking for useless info. *I provided it all in the description.
Now he's just sitting at the bottom corner, still hungry, sad and sick probably, and his breathing seems strange. Hes laying on the rocks, so I can see him bob when he breaths in and out and it seems like big breaths. Can someone please tell me if there's a way to save him? *Edit: he swam a little all of a sudden to another spot to lay on the rocks.
What can I do to keep a baby alive next time?