This thread is going into some other direction. Things getting complicated. The OP asked us what he can stock in his 5 GALLON he has and he doesn't ask that he is planning to upgrade that tank with a new one. He wants to make use of the EXISTING tank he has. So best advice is to recommend him fish good for a 5 gallon instead of suggesting him to go for 10 gallon or bigger. Yes, the bigger the better but he wants to make use of the tank he already owns.
I recommended already and I say again to OP that any colorful fish would be good for your 3 year old. She needs a lively energetic color fish. A hardy one and a fish that jump to offered food without any hesitation. Danios, tetras, barbs, rasboras, platties you name it. There are so many colourful small fish she would love feeding and seeing in her tank.
I recommended already and I say again to OP that any colorful fish would be good for your 3 year old. She needs a lively energetic color fish. A hardy one and a fish that jump to offered food without any hesitation. Danios, tetras, barbs, rasboras, platties you name it. There are so many colourful small fish she would love feeding and seeing in her tank.