Help With Tank Size, Etc

[Domster566285]

I have a 45-50 gallon tank, which holds an oscar, a parrot fish, and a bicher.Two weeks ago when i bought them, the storekeeer said it was a good size for them.

she lied.

lol, reading about oscars told me that one oscar needs 55 gallons!!
stupid storekeeper!
I dont want to get rid of any fish.
I dont know if i can move my parrot fish to my slightly community tank with the tetra, goldifish, and gourami in it. (three year old brother loves this tank)
I know cant move my bicher in that tank, becuase he is an acrobat, and the tank has squar gaps in the lid.
All my fish are fine and healthy.
any recommondations?

 

[Luketendo]

I don't really know much about parrotfish but I think their mouth would be big enough to eat tetras.

Why do you have goldfish in with tropical fish, it could easily grow big and eat your tetras. Also if it is heated your goldfish is having a very reduced lifespan since it should not be exposed to higher temperatures, these up it's metabolism, make it want to eat more and produce lots more waste (and it already produces huge amounts before this.)