Most of the tropical fish species listed below their tank temperature's should be around  75 to 80  F 

 Danio's are another fish species that like's to be in groups of five or more.  And like lots of open space to swim and a few hiding 

Species- Danio rerio

Common name- Zebra danio

Care level- Easy

Temperment- Peaceful

Adult size- 2 1/3 inches

Tank size- 5 gallons or bigger

Species- Devario aequipinnatus

Common name- Giant danio

Care level- Easy

Temperament- Peaceful

Adult Size- 4.7 inches

30 gallons or bigger 

Species- Danio albolineatus

Common name- Pearl danio

Care level- easy

temperament- Peaceful

Adult size- 2 1/3 inches

Tank size- 5 gallons or bigger