Originally Posted by pcas3
I have recently purchased a 55 gallon aquarium kit and I want a freshwater tank that is as vibrant and eye catching as a marine aquarium. I've gotten used to my 20g but all I have are mollies and platys and I want something different. Even if I have fake decorations I would like some ideas of bright and playful fish or inverts. I'd like a lot of fish to take up space. Any suggestions would be greatly appreciated!
Invert-wise, Dwarf Crayfish are bright orange and very fun to watch.
Threadfin Rainbows are colorful and have very active fin flicking displays when kept in good numbers. All rainbows tend to be very colorful and active, but Threadfins have the coolest displays imo
Loaches aren't very colorful, but are very active and playful. Don't keep them with crayfish though, as they'll tend to eat the crays when they molt.
Kribensis Cichlids, Apistos, or Rams are all very colorful and interactive.
Tetras, Rasboras, and Barbs have a wide variety of colorful and active options, such as Harlequin Rasboras, Chili Rasboras, Cardinal Tetras, Congo Tetras, Filament Barb, Cherry Barb, etc.
If none of these catch your eye and you want something totally different, you can always do a DIY GloFish tank like this (old pic, before I fully stocked it):