I have a few tank set ups and in one Of my 20 gallons I have 3 zebra danios, 2 barbs, 4 dwarf frogs, 1 male betta and 2 plecos, today I went out and bought 2 male dwarf gouramis, I put them into my tank at around 430pm and they were both fine happy and healthy, they also didn't seem to have a...