Fun Fish for Tank?

Depends on the tank size but if it were me...

5-10 gallons: guppies, neons and maybe a dwarf Gourami.

20-30 gallons: Mollies and maybe an angelfish

40-55 gallons: Smaller loach varieties (zebra and polk-a-dot) and Electric Blue Ram Cichlids (or German Blue Rams)

75-100 gallons: Oscars

200+ gallons: Oscars, maybe a few Green Terrors and Clown Loaches

African Dwarf Frogs are neat little creatures. They would need at least a 10 gallon for a group of 3-4.

Info on them: https://www.aqua-fish.net/articles/raising-african...

Honey Gourami are colorful, cute fish with lots of personality. They have long feelers that they will constantly be exploring thing with.

Info on them: http://www.seriouslyfish.com/species/trichogaster-...

Cherry Shrimp are interesting little creatures, too. They're attractive and easy to breed.

http://www.tfhmagazine.com/details/articles/red-ch...

Cherry Shrimp can be kept with Mystery Snails, which are one of the more colorful and cute snails around.

Mystery Snails are one of the smaller types of Apple Snails.

Info on them: http://applesnail.net/

Cardinal Tetras are peaceful, incredibly colorful schooling fish.

http://www.practicalfishkeeping.co.uk/content.php?...

Corydoras Catfish are adorable little creatures, too.

http://animal-world.com/encyclo/fresh/catfish/acor...

Of those, the Gourami, Cardinals, and Corycats can all be kept in the same tank together.

The Cherry Shrimp do best in a tank without fish or frogs, but can be kept with snails.

The frogs can be kept with certain fish, but do best in species aquarium.

Neon fish!! I personally like getting different colored goldfish

Clown fish.