I have a 44 gallon tank with 5 neon tetras, 2 regosa, 2 hatchets, a silver dollar, a black skirt tetra and a julie catfish. I also have a 16 gallon tank with 3 upside down catfish which have grown quite large over the past 4 years and 1 yellow gourami. I’m going to put the fish in the 16 gallon...